Douglas Dynamics 29049, 29053, 29400-7, 29051 Parts List And Installation Instructions

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November 15, 2019

Lit. No. 74033, Rev. 01

29049, 29051, 29053, 29400-7

HARNESS KIT

3-PORT ISOLATION MODULE

LIGHT SYSTEM

w/2-PLUG SYSTEM HARNESSES

Parts List and Installation Instructions

CAUTION

Read this document before installing the snowplow.

CAUTION

See your sales outlet/website for speciﬁ c vehicle application recommendations before installation. The online selection system has speciﬁ c vehicle and snowplow requirements.

A DIVISION OF DOUGL AS DYNAMICS, LLC

29049, 29051, 29053, 29400-7

PARTS LIST

Plug-In Harness Kit and Plug-In Harness Extension

Qty

Part Description

28986 Plug-In Harness, H13 1 28464 Plug-In Harness, 2B or 2D or HB-2 1 29058 Plug-In Harness, 5-Pin Connector 1

29499 -1 Plug-In Harness, HB-3 & H11 1

26357 Vehicle Lighting Harness – 11-Pin 1 1 40284 Isolated Stud Block 1 21563 Battery Cable – 90" 1

29861-4

29071 8" Cable Assembly 1 95837 Fuse Holder 1 90729 200A Fuse 1

Vehicle Lighting Harness – 11-Pin w/Relay Assembly

– Reclosable Fasteners 4 4 4 4 – Splices 1111 – Heatshrink Tubing 1111

29049

29051

29053

LED Plow Light Kit

Part Description Qty

72565 Headlamp Control Module (HCM) 1 72554 Harness Assembly – HCM to Isolation Module 1 72546 Vehicle Harness Assembly – HCM to Grille 1 72548 Harness Assembly – Plow Lighting 1 72550 Cable Assembly – HCM 1 72552 Wire Assembly – EdgeView™ Lights 1

– Reclosable Fasteners 4

29400-7

90730

Lit. No. 74033, Rev. 01 2 November 15, 2019

29049, 29051, 29053, 29400-7

SAFETY DEFINITIONS

WARNING

Indicates a potentially hazardous situation that, if not avoided, could result in death or serious personal injury.

CAUTION

Indicates a potentially hazardous situation that, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices.

NOTE: Indicates a situation or action that can lead to damage to your snowplow and vehicle or other property. Other useful information can also be described.

FUSES

The snowplow electrical and hydraulic systems contain several automotive-style fuses. If a problem should occur and fuse replacement is necessary, the replacement fuse must be of the same type and amperage rating as the original. Installing a fuse with a higher rating can damage the system and could start a ﬁ re. Fuse Replacement, including fuse ratings and locations, is located in the Maintenance section of the Owner's Manual.

BATTERY SAFETY

CAUTION

Batteries normally produce explosive gases, which can cause personal injury. Therefore, do not allow ﬂ ames, sparks, or lit tobacco to come near the battery. When charging or working near a battery, always cover your face and protect your eyes, and also provide ventilation.

• Batteries contain sulfuric acid, which burns skin, eyes, and clothing.

• Disconnect the battery before removing or replacing any electrical components.

TORQUE CHART

CAUTION

Read instructions before assembling. Fasteners should be ﬁ nger tight until instructed to tighten according to the torque chart. Use standard methods and practices when attaching snowplow, including proper personal protective safety equipment.

Recommended Fastener Torque Chart

Inch Fasteners Grade 5 and Grade 8

Size Size

1/4-20 148 209

1/4-28 164 232 5/16-18 203 287 5/16-24 230 325

3/8-16 365 510

3/8-24 7/16 -14 7/16 -20

1/2-13

1/2-20

Tor qu e ( N·m)

Grade

11. 4

13.1

23.6

26.0

41.8

47.5

67.0

74. 8

102.1 115 .2

Grade

16.2

18.5

33.3

36.9

59.1

67.0

94.6

105.6

144.3

162.7

9/16-12 9/16-18

5/8-11 5/8-18 3/4-10 3/4-16

7/8 -9

7/8 -14 643 907

1-12 954 1349

Metric Fasteners Class 8.8 and 10.9

Size Size

M6 x 1.00

M8 x 1.25 M10 x 1.50 M12 x 1.75 M14 x 2.00 M16 x 2.00 M18 x 2.50 431301

Tor qu e ( N·m)

Class

8.8

10.4

26.4

52.2 91

145

226

These torque values apply to fasteners

except those noted in the instructions.

36.5

72.2 126 200 313

Class

10.9

M20 x 2.5015.0 M22 x 2.50 M24 x 3.00 M27 x 3.00 M30 x 3.50 M33 x 3.50 M36 x 4.00

Tor qu e ( N·m)

Grade

403 569 582 822

873 12321-8

Tor qu e ( N·m)

Class

8.8

441 580

762 1079 1515 1990 2647

Grade

Class

10.9

610

831 1055 154 4 2095 2849 3662

Lit. No. 74033, Rev. 01 3 November 15, 2019

29049, 29051, 29053, 29400-7

TYPICAL 2-PLUG, 3-PORT MODULE SYSTEM DIAGRAM

NOTE: On 2-plug electrical systems, plug covers shall be used whenever snowplow is disconnected.

To Switched

Accessory

To Snowplow Control

RED

200A Fuse

and Holder**

Fire Wall

8" Cable**

RED

Battery*

* See the Battery Connections section

for more information.

** Included in 200A Fuse Kit (PN 90730).

BLK

Vehicle Control Harness

3-Port Module

10A Fuses

snowplow control)

(snowplow park/turn &

Turn Signal

Configuration Plug

BAT

(11-pin)

Vehicle Lighting

Harness

Typical Plug-In Harness

Factory Vehicle Harness

Vehicle Battery Cable

Factory Vehicle Harness

Park/Turn

Lamps

Vehicle

Headlamps

Lit. No. 74033, Rev. 01 4 November 15, 2019

Headlamps

Lamps

29049, 29051, 29053, 29400-7

INSTALLATION INSTRUCTIONS

Isolation Module Mounting

CAUTION

Before installing self-drilling screws or drilling mounting holes, check the selected mounting area for any wires, hoses, or other obstructions.

Isolation modules are sold separately. Check the online selection system for the correct module for your vehicle.

Locate a ﬂ at surface within the engine compartment of the vehicle for mounting the isolation module (on the driver's side, if possible). The ﬁ re wall, fender well, or radiator shroud are possible mounting locations. If a suitable ﬂ at surface is not accessible, cable tie the isolation module to existing brackets or harnessing.

Reclosable fastener strips and/or cable ties are supplied for mounting the isolation module, but self-drilling screws can also be used. When using reclosable fastener strips, the mounting surface must be free of dirt and grease.

Isolation Module

(bottom view)

Reclosable Fastener Strips

Screws (2) Cable Ties (4)

(if supplied)

Vehicle Battery Cable Installation

CAUTION

• Batteries contain sulfuric acid, which burns skin, eyes, and clothing.

• Disconnect the battery before removing or replacing any electrical components.

NOTE: Fuse holder and fuse are to be installed between the POSITIVE (+) vehicle battery terminal and the end of the supplied snowplow vehicle battery cable assembly.

NOTE: When instructed, make all snowplow battery cable connections to the auxiliary battery, if vehicle is so equipped.

NOTE: Use dielectric grease on all electrical connections to prevent corrosion. Fill receptacles and lightly coat ring terminals before assembly.

NOTE: For vehicles equipped with a tilt cab or tilt hood, a service loop will be necessary when making harness or cable transitions from the cab/hood to the frame. Check the cable installation for interference by raising and lowering the cab/hood a number of times. Add anti-chaﬁ ng material (installer-supplied) as needed.

1. Turn OFF the vehicle ignition.

2. Disconnect both the NEGATIVE (–) and the POSITIVE (+) battery cables from the vehicle battery.

Lit. No. 74033, Rev. 01 5 November 15, 2019

29049, 29051, 29053, 29400-7

3. Route the supplied vehicle battery cable from the grille or bumper to the battery, avoiding any sharp edges and hot or moving parts. Cable tie only the end section closest to the grille. The vehicle battery cable may need to be lengthened on vehicles with batteries located under or behind the cab.

If lengthening cables is necessary, use the supplied isolated stud junction block. Mount the block to a ﬂ at surface within reach of the vehicle battery cable, and connect both the vehicle battery cable and the supplied 90" battery cable to the junction block.

Vehicle Battery Cable

90" Battery Cable

Isolated Stud Junction Block

4. Remove the fuse holder cover, loosen and remove the fuse holder nuts and lock washers. Install a 200A fuse into the fuse holder.

5. Attach one end of the supplied 8" cable to the fuse holder so that the ring terminal is on top of the fuse. Replace the lock washer and nut on this terminal and hand tighten the nut.

6. Attach the red lead from the vehicle battery cable (or 90" battery cable) to the second fuse holder terminal, placing the cable ring terminal on top of the fuse lead. Replace the lock washer and nut on this terminal and hand tighten the nut.

7. Torque the fuse holder nuts to 106–159 in-lb and snap the fuse holder cover into place.

8. Route the 8" cable from the fuse holder to the POSITIVE (+) battery terminal. Do not connect at

this time.

9. Route the black wire from the vehicle battery cable to the NEGATIVE (–) battery connection point. Do not connect at this time. On vehicles with the batteries located under or behind the cab, connect the black wire from the vehicle battery cable to the frame using an existing hole or ground bolt. Prior to attaching, clean away any paint or dirt to ensure a good ground connection. The 4-position connector from the vehicle battery cable will connect to the mating connector (labeled "BAT") on the end of the vehicle control harness.

* For installations requiring an adapter, follow the instructions included with the adapter.

Lit. No. 74033, Rev. 01 6 November 15, 2019

29049, 29051, 29053, 29400-7

Vehicle Lighting and Vehicle Control Harness Installation

For Halogen plow light installation, proceed with the following instructions.

For LED plow light installation, install the vehicle control harness as instructed, but DO NOT install the supplied vehicle lighting harness. Instead, refer to the LED Installation Instructions on page 10.

1. Route both harnesses around or through the radiator bulkhead to the isolation module.

2. Connect the vehicle lighting harness to position "A" on the 3-port isolation module.

3. Route the end of the vehicle control harness with the white 4-pin connector to the ﬁ re wall.

4. Connect the black 4-position connector (labeled "BAT") from the end of the vehicle control harness to the 4-position connector from the vehicle battery cable. Do not cable tie the harness at this time.

CAUTION

Before installing self-drilling screws or drilling mounting holes, check the selected mounting area for any wires, hoses, or other obstructions.

5. On the driver's side, locate an existing hole through the ﬁ re wall for the vehicle control harness. If access through the ﬁ re wall does not exist, drill a 5/8" hole through the ﬁ re wall of the vehicle in a convenient location away from sharp edges and hot or moving parts.

6. Push the braided harness breakout with the cab control connector through the ﬁ re wall hole into the cab. Use a grommet, existing plug cover, or proper chaﬁ ng material to protect the harness where it passes through the ﬁ re wall. Route the harness to the selected control mounting location.

To mount the control, follow the instructions supplied with the control.

7. Locate an accessory wire controlled by the ignition switch. Acceptable accessory wires show +12V when the ignition switch is ON, and 0V when it is OFF.

8. Route the red "ACC" wire from the vehicle control harness to this location and trim away excess length.

9. Following the instructions in the Recommended Splicing Procedure section, splice the red "ACC" wire into the switched accessory wire using the supplied parallel splices and heatshrink tubing.

NOTE: Cable tie the control harness and accessory tap away from the brake, clutch, gas, or parking brake pedals, and any hot, sharp, or moving parts.

Lit. No. 74033, Rev. 01 7 November 15, 2019

29049, 29051, 29053, 29400-7

PLUG COVER INSTALLATION

Stretch the rectangular opening of the plug cover strap over the end of the vehicle battery cable. Place the plug cover over the molded plug whenever the snowplow is not in use.

Molded Plug

Plug Cover

PLUG-IN HARNESS INSTALLATION: VEHICLES USING THE 29053 HARNESS KIT

1. Locate the passenger-side OEM vehicle headlamp connector located near the tilt-hood hinge below the headlamp housing.

2. Remove the small, light gray connector lock by carefully sliding it back away from the connector. Save the connector lock. Separate the connectors by pushing down on the locking tab and pulling them apart.

3. Connect the plug-in harness female connector to the male OEM vehicle headlamp connector. Reinstall the small, light gray connector lock.

4. Connect the plug-in harness male connector to the female OEM vehicle headlamp connector.

5. Route the remaining half of the plug-in harness to the driver-side OEM vehicle headlamp connector, and repeat Steps 2–4.

6. Route the plug-in harness to the 3-port isolation module by running the harness along the existing cables underneath the engine and radiator area. Connect the plug-in harness to the module by matching harness connector B with module port B and harness connector C with module port C.

7. Connect the black 4-position connector from the middle of the vehicle control harness to the 4-position connector from the plug-in harness.

8. Cable tie the vehicle control harness, vehicle lighting harness, and plug-in harness away from any sharp, hot, or moving parts.

9. Skip ahead to the Turn Signal Conﬁ guration Plug section.

Lit. No. 74033, Rev. 01 8 November 15, 2019

29049, 29051, 29053, 29400-7

PLUG-IN HARNESS INSTALLATION: ALL OTHER APPLICATIONS

1. For vehicles using the 29400-7 harness kit: The plug-in harness contains four reversible 2-position connectors. One set of connectors connects to the HB-3 bulbs and one set connects with the H11 bulbs.

NOTE: To properly install reversible 2-position connectors, it is necessary to know which pin of the OEM headlamp connectors is common.* When mating the OEM headlamp connectors with the plug-in harness, be sure to orient the connectors as shown below.

A (Common)

OEM Headlamp Connector**

B (Common)

OEM Headlamp Connector** Plug-In Harness Connector**

** Connector appearance will vary.

NOTE: DO NOT PROBE OR DAMAGE THE WIRE INSULATION. When the common wire is located the test lamp will illuminate.

Plug-In Harness Connector**

2. Remove the headlamp or headlamp housing connectors. Connect the plug-in harness to the mating connectors removed from the headlamps or headlamp housings.* Connect the plug-in harness to the mating connections at the headlamps or headlamp housings. Route the plug-in harness to the 3-port isolation module. Connect the plug-in harness to the module by matching harness connector B with module port B and harness connector C with module port C.

For vehicles with dedicated Daytime Running

Light (DRL) bulbs: Connect the DRL wire from the plug-in harness to the vehicle DRL bulb POSITIVE (+) wire.

For vehicles with headlamp bulb or turn signal

DRLs: The DRL wire from the plug-in harness will not be used. Coil and cable tie the DRL wire.

For vehicles requiring the 69826, 69826-1, or 69826-2 relay adapter kit, refer to the Installation

Instructions packed with the kit.

3. Connect the black 4-position connector from the middle of the vehicle control harness to the 4-position connector from the plug-in harness.

4. If not already done during adapter installation, locate the turn signal wire on each side of the vehicle. Splice the "TURN" wire from the plug-in harness into the signal wire on the corresponding side following the instructions in the Recommended Splicing Procedure section.

5. If not already done during adapter installation, splice the "PARK" wire from the plug-in harness into the parking light wire following the instructions in the Recommended Splicing Procedure section.

6. Cable tie the vehicle control harness, vehicle lighting harness, and plug-in harness away from any sharp, hot, or moving parts.

7. For vehicles using the 29400-7 harness kit: To complete the installation, secure the relay assemblies to an existing assembly using cable ties. Mount the relay connectors wire side down.

* See A & B markings on the OEM headlamp connector for pin identiﬁ cation when testing for common.

Lit. No. 74033, Rev. 01 9 November 15, 2019

29049, 29051, 29053, 29400-7

TURN SIGNAL CONFIGURATION PLUG

WARNING

If the turn signal conﬁ guration plug is mated incorrectly, the turn signals will be reversed between the vehicle and the snowplow.

1. Mate the turn signal conﬁ guration plug located on the plug-in harness. If the isolation module is installed on the driver's side, mate the plug so that the wire colors match (green to green and blue to blue). If the module is installed on the passenger's side, mate the plug so that the wire colors are opposite (green to blue).

Turn Signal Configuration Plug

LED INSTALLATION INSTRUCTIONS

Headlamp Control Module (HCM) Mounting

Locate a ﬂ at surface within the engine compartment of the vehicle near the isolation module. If a suitable ﬂ at surface is not accessible, cable tie the HCM to existing brackets or harnessing.

Mount the HCM so that the harness connections are wire side down.

NOTE: If possible, mount the HCM in an area that is protected from road splash.

Reclosable fastener strips and/or cable ties are supplied for mounting the HCM. When using reclosable fastener strips, the mounting surface must be free of dirt and grease.

Headlamp Control Module

(bottom view)

B – Green & Red Wires C – Blue & Red Wires

Driver-Side Module Passenger-Side Module

GRN GRN

BLU BLU

2. Connect the single-wire connector from the vehicle lighting harness to the single-wire connector from the plug-in harness.

BLU GRN

GRN BLU

Reclosable Fastener Strips

Cable Ties (4)

Lit. No. 74033, Rev. 01 10 November 15, 2019

29049, 29051, 29053, 29400-7

HCM Vehicle Battery Cable Installation

CAUTION

• Batteries contain sulfuric acid, which burns skin, eyes, and clothing.

• Disconnect the battery before removing or replacing any electrical components.

NOTE: When instructed, make all snowplow battery cable connections to the auxiliary battery, if vehicle is so equipped.

NOTE: Use dielectric grease on all electrical connections to prevent corrosion. Fill receptacles and lightly coat ring terminals before assembly.

1. Turn OFF the vehicle ignition.

HCM Vehicle Lighting Harness Installation

1. Route harnesses around or through the radiator bulkhead to the HCM.

2. Make the following connections:

• 2-position connector from the vehicle lighting harness to the matching 2-position connector from the vehicle cable assembly

• Vehicle lighting harness to position "Y" on the HCM

• Single-pin connector from the plug-in harness assembly to the single-pin connector on the vehicle lighting harness.

3. Route the red wire from the vehicle lighting harness to the stud on the HCM.

4. Remove the protective plastic domed nut and the top brass nut from the HCM stud. Install the red wire ring terminal on stud and remaining brass nut. Reinstall the top brass nut and tighten to

25.9 in-lb. Reinstall the protective plastic domed nut. (See illustration below.)

2. Disconnect both the NEGATIVE (–) and the POSITIVE (+) battery cables from the vehicle battery.

3. Route the supplied HCM vehicle battery cable from the battery to the 2-position mating connector on the HCM vehicle lighting harness, avoiding any sharp edges and hot or moving parts.

Brass Nuts

Domed Nut

Headlamp Control Module (HCM)

Red Wire Ring Terminal (from vehicle lighting harness)

Lit. No. 74033, Rev. 01 11 November 15, 2019

29049, 29051, 29053, 29400-7

TYPICAL LED PLOW LIGHT, HEADLAMP CONTROL MODULE (HCM), AND HARNESS DIAGRAM

To Snowplow Control

25A Fuse

Vehicle

Cable

Assembly

Battery

200A Fuse

and Holder*

Vehicle Control Harness

Vehicle Battery Cable

* Included in 200A Fuse Kit (PN 90730).

Accessory

To Switched

HCM to

Isolation Module

Harness Assembly

Plug

Turn Signal

Configuration

10A Fuses

EdgeView

Enable Jumper

Install with wires down.

RED

EdgeView

Wire

15A Fuses

Ford SD Quad Light

Relay Enable Plug & Cover

RAM Enable

Wire (7-wire

system only)

ORN YEL

Vehicle

Lighting

Harness

NOTE: On 2-plug electrical systems, plug covers shall be used whenever

EdgeView™

snowplow is disconnected.

Lit. No. 74033, Rev. 01 12 November 15, 2019

Wire Assembly

Plow

YEL

Plow Lights

Lighting Harness

29049, 29051, 29053, 29400-7

PLUG COVER INSTALLATION

Stretch the rectangular opening of the plug cover strap over the end of the HCM vehicle lighting harness. Place the plug cover over the molded plug whenever the snowplow is not in use.

Molded Plug

Plug Cover

HCM TO ISOLATION MODULE HARNESS INSTALLATION

1. Make the following connections:

• 10-pin connector to port A of the isolation module

• 8-position connector to port X of the HCM.

BATTERY CONNECTIONS

NOTE: Use cable ties to secure cable assemblies and control and lighting harnesses away from any sharp edges and hot or moving parts.

NOTE: Follow OEM battery cable connection recommendations when attaching to the battery.

1. Make the following attachments to the POSITIVE (+) battery terminal:

• POSITIVE (+) OEM cable assembly

• Red 8" cable from fuse holder

• Red cable from headlamp control module power cable.

2. Make the following attachments to the NEGATIVE (–) battery terminal:

• NEGATIVE (–) OEM cable assembly

• Black vehicle battery cable

• Black cable from headlamp control module power cable.

2. Cable tie harnesses as needed, away from any sharp, hot, or moving parts.

Lit. No. 74033, Rev. 01 13 November 15, 2019

29049, 29051, 29053, 29400-7

BATTERY CABLE CONNECTIONS

Top Post Batteries, Style Three

These terminals are similar to Style Two, but do not have a visible cam or tab.

2. Make the connections to the NEGATIVE (–) terminal as follows:

a. Remove the cable assembly from the battery

post by removing the nut.

b. Place the black wire from the vehicle battery

cable over the battery terminal screw and reinstall the nut.

c. Place the cable assembly on the battery post,

and tighten the nut.

Side Terminal Batteries

1. Use the furnished battery cable adapter to attach the red battery cable to the POSITIVE (+) terminal of the battery. Position the cable, and tighten the adapter to 124–178 in-lb.

2. Connect the OEM POSITIVE (+) cable to the adapter on the battery. Position the cable and, while holding the adapter, tighten the battery cable bolt to 124–178 in-lb.

1. Make the connections to the POSITIVE (+) terminal as follows:

a. Remove the cable assembly from the battery

post by removing the nut. Trim the plastic terminal cover as necessary to accommodate the red snowplow battery cable.

b. Place the red battery cable over the battery

terminal screw and reinstall the nut.

c. Place the cable assembly on the battery post,

align the red battery cable with the opening in the cover, and tighten the nut. Close the plastic terminal cover.

3. Connect the black wire from the vehicle battery cable and the OEM NEGATIVE (–) cable to the NEGATIVE (–) battery terminal following the same procedure used in Steps 1 and 2.

Lit. No. 74033, Rev. 01 15 November 15, 2019

29049, 29051, 29053, 29400-7

CHANGING BLADE-EDGE ILLUMINATION MODE

On snowplows equipped with LED headlamps, the EdgeView™ technology feature oﬀ ers three modes for blade-edge illumination. The factory default setting is ON.

To change the blade-edge illumination mode, remove the cover from the fuse holder located near the "Y" port of the headlamp control module installed in the vehicle engine compartment.

HEADLAMP

CONTROL MODULE

Fuse Holder and Cover

Headlamp Control Module

Remove the jumper fuse from the fuse holder and re-insert it in the desired mode position as shown below. Replace the fuse holder cover.

Jumper

Fuse

Default – ON:

Blade edge lights illuminate when plow has power.

FLT: Blade edge lights illuminate when blade is in FLOAT mode.

PLOW-SIDE EdgeView LIGHTING CONNECTIONS

The EdgeView Float (FLT) mode activation function will require a second plow-side electrical connection.

1. On the plow-side LED lighting harness, locate the yellow wire cable tied to the body of the harness near the "Y" section.

2. Strip the end of the yellow wire and insert stripped wire end into the pre-installed insulated butt connector on the supplied EdgeView wire assembly.

3. Crimp the connection and heat seal the insulated splice.

4. Remove the snowplow hydraulic unit cover. Route the EdgeView wire assembly along the snowplow structure to the snowplow hydraulic unit, and cable tie wires as needed.

5. Locate the solenoid on the snowplow hydraulic unit that is activated during the snowplow Lower/Float function. Refer to the Mechanic's Guide or snowplow manufacturer's website for further information.

6. Plug the bullet terminal on the end of the supplied EdgeView wire assembly into the receptacle on the corresponding solenoid wire. If a receptacle is not found on the correct solenoid wire, remove the bullet terminal from the EdgeView wire assembly and splice the end of the EdgeView wire into the correct solenoid wire.

7. Cable tie extra wire length to the snowplow assembly and reinstall the hydraulic unit covers.

NOTE: EdgeView light will turn ON or OFF approximately 5 seconds after EdgeView Mode is activated or canceled.

OFF: Blade edge lights disabled.

Lit. No. 74033, Rev. 01 16 November 15, 2019

29049, 29051, 29053, 29400-7

RECOMMENDED SPLICING PROCEDURE

1. Locate the wire to be spliced into.

2. Cut the wire at least 1-1/2" from any other splice, connector, or terminal. If wires are covered by tubing or braid, remove enough of it to achieve the minimum clearance required.

3. Strip away 5/16" of the insulation from the ends of the wires to be spliced.

4. Slide two wires into one end of the supplied parallel splice.

5. Place a piece of heatshrink tubing (3/16" x 1-1/4" long) over the remaining wire to be spliced. Cut tubing into 1-1/4" lengths if required.

6. Insert the wire into the open end of the splice and crimp using an appropriate crimp tool. One or two crimps may be necessary to ensure a good connection. No wire strands should be visible outside of the splice.

9. Check circuits for continuity.

10. Cover the splice with heatshrink tubing. The tubing should extend beyond the splice on both sides.

11. Using a hot air source, starting in the center and working to either side, apply heat until the tubing recovers and glue can be seen around the edges. Allow the tubing to cool before handling.

NOTE: The splices supplied will accommodate 18-gauge wires as shown. For larger-gauge wires, cut the wire, strip the ends 3/8" to 1/2", and twist together. Apply solder to the splice and cover with heatshrink tubing.

Splicing Procedure

5/16"

From OEM

From park, turn,

or DRL lamp

Insert wires into splice.

vehicle harness From plug-in

harness

7. Preheat a soldering tool for at least one minute to help promote even solder ﬂ ow.

8. Apply heat to the splice. Avoid heating too close to the insulation. Apply solder to the wires, using just enough solder to produce an even ﬂ ow through the splice. Use rosin core solder ONLY. Do not

use acid core solder.

NOTE: Avoid using an excessive amount of solder as it can result in wicking. Wicking occurs when solder travels up the wire core. This may cause the wire to become stiﬀ or brittle, which could lead to a broken or open circuit.

Crimp and solder each splice.

Butt Splice

Cover the splice with heatshrink tubing.

Using a hot air source, apply heat until tubing

recovers and glue can be seen around the

edges. Allow tubing to cool before handling.

Glue

Heatshrink Tubing

Lit. No. 74033, Rev. 01 17 November 15, 2019

29049, 29051, 29053, 29400-7

Copyright © 2019 Douglas Dynamics, LLC. All rights reserved. This material may not be reproduced or copied, in whole or in part, in any printed, mechanical, electronic, ﬁ lm, or other distribution and storage media, without the written consent of the company. Authorization to photocopy items for internal or personal use by the company's outlets or snowplow owner is granted.

The company reserves the right under its product improvement policy to change construction or design details and furnish equipment when so altered without reference to illustrations or speciﬁ cations used. This equipment manufacturer or the vehicle manufacturer may require or recommend optional equipment for snow removal. Do not exceed vehicle ratings with a snowplow. The company oﬀ ers a limited warranty for all snowplows and accessories. See separately printed page for this impor tant information. The following is an unregistered (™) trademark of Douglas Dynamics, LLC: EdgeView™.

Printed in U.S.A.

Lit. No. 74033, Rev. 01 18 November 15, 2019

Douglas Dynamics 29049, 29053, 29400-7, 29051 Parts List And Installation Instructions

Specifications and Main Features

Frequently Asked Questions

User Manual