INSTALLATION INSTRUCTIONS
1
2
O
N
112
2
1 2
4 CYL. / 2 PULSE
6 CYL. / 3 PULSE 8 CYL. / 4 PULSE
DN DN
DN UP UP UP
2650-1142
If after completely reading these instructions you have questions regarding the operation or installation of your instrument(s),
Additional information can also be found at http://www.autometer.com/tech_faq.aspx
please contact Auto Meter Technical Service at 815-899-0801.
Tach Calibration with Wire Loops
8 Cylinder: No adjustment necessary.
6 Cylinder: Clip BROWN wire loop only.
Insulate with electrical tape.
4 Cylinder: Clip BROWN and ORANGE
wire loops. Insulate with electrical tape.
Model 4594 only: After clipping necessary
wire(s) and insulating them,
push wires into hole and use
the hole plug to seal the hole.
Model 4594 only
Clip necessary
wire loops.
Do not push
wires into case.
Clip necessary
wire loops.
QUESTIONS:
You may also email us at service@autometer.com.
Tach Calibration with Switches
The switch to change tachometer
calibration is inside the tachometer
and is accesible via the light hole on
the back of the tachometer.
The switch is located to the left of
the light socket. Adjust switch with a
small screw driver or unwound
paper clip.
8 CYL: Both switches up.
6 CYL: Switch One down, Switch Two up.
4 CYL: Both switches up.
Unwound
paper clip
Switch
Light
Light hole with
rubber plug
removed.
MOUNTING
In-Dash Tachs
1. Cut a 33⁄8" dia. hole in the dashboard for the tachometer.
2. Drill a 3⁄8" dia. hole in the rewall where the tachometer wires
will be routed. Place rubber grommet in hole and route the
green and black wires through to the engine compartment.
3. Connect the tachometer wires as shown in this instruction.
4. Secure the tachometer in the dashboard using the brackets,
nuts and lockwashers provided.
Pedestal Tachs
The special design of the tachometer base allows for a
variety of mounting possibilities. Loosening the hex screws
at the mounting base allows the tachometer to be rotated in
the shock strap. This will also allow the tachometer face to
be angled forward or backward for better viewing. Attach the
base using screws provided or some other means, such as
pop riveting.
5"
21⁄8"
33⁄8"
Rubber seal on model 4594
Switchplate
Split Lockwasher (2)
#8-32 Nut (2)
Dash
2" or 21/16"
Dia. Hole
#8-32 Round
Head Screw (2)
REMOTE MEMORY SWITCH
Mounting Switch to Switchplate
Mounting Switch to Dash
Nut
Knob
Lockwasher
Rubber Gasket
Switchplate
REMOTE MEMORY FEATURE
Memory tachometers record the highest RPM reached during each race.
This memory feature operate as shown below.
Use As Tach
Race with the switch in “TACH” position.
The tach will function as normal to monitor
engine RPM.
Recall RPM
Switch to “RECALL” to display peak RPM.
This can be done during or after a race. To
clear for next race, see Erase Memory step.
Erase Memory
Switch to “ERASE” mode before each race.
This clears previous runs from the memory.
Recording will begin when switch is returned to
TACH mode.
TACH FACE MEMORY CONTROLS
Memory tachometers record the highest RPM reached during each race.
This memory feature operates as follows.
ERASE MEMORY: Push “ERASE” button before each race. This clears the
memory from the previous runs. You are now ready to record.
RECALL RPM: Push “RECALL” button to display the highest RPM reached.
LIGHT REPLACEMENT
LIGHT REPLACEMENT FOR 5" TACHS
Rotate twist-lock socket counterclockwise and
remove. Replace the old bulb with Auto Meter
No. 3218 or GE86 Bulb.
LIGHT REPLACEMENT FOR 3¾" TACHS
Remove rubber plug. Rotate twist-lock socket counterclockwise
using needle nose pliers and remove. Replace old bulb with Auto
Meter NO. 3206 or GE 194 bulb.
Rubber Plug
12V
BA
TTER
Y
WIRING
Connect the tachometer wires as shown below. All wires passing
through rewall should be routed through the rubber grommet provided.
If splice connector is used be sure to make the connection inside the
car’s driving compartment.
White (Not used on 4594)
Fuse
Red
12V Dash Lighting
12V Ignition Switch (+)
Exsting
Circuitry
Good
Engine
Ground
Black
Green
CAUTION!!!
As a safety precaution the RED wire of this product should be fused before
connecting it to the positive (+) side of the 12V DC battery. We recommend
using a 1 Amp, 3AG fast-acting type cartridge fuse (Littlefuse® #312 001
or an equivalent) inline with the RED wire of our product.
NOTE: This tachometer operates on standard factory electronic and high
performance electronic racing ignitions, such as Hy Fire and MSD.
(This tachometer is NOT recommended for use on Accel BEI or
Laser I & II ignitions.
Note (Model 4594 only): The glow in the dark coating on the dial of this
gauge may turn gray if exposed to direct sunlight for extended periods
of time. When the car is not being used and will be in direct sunlight
for a long time, place the provided red plastic cover on the gauge.
Grommet
in Firewall
* See “Warning” below
Electronic
Ignition
Early
Model
Ignition
*
Warranty will be void if connected to coil when using
an aftermarket ignition box such as, but not limited to
products from the following manufacturers: MSD, Crane,
Jacobs, Mallory, Holley, Etc.. Prior to installation of your
tachometer, check with the ignition box manufacturer for
recommended tachometer signal location.
*
See autometer.com/tech_installation.aspx for specic
vehicle information.
WARNING
Tach
Terminal
For service send your product to Auto Meter in a well packed shipping carton. Please include a note explaining what the problem is along with your phone number. Please specify
when you need the product back. If you need it back immediately mark the outside of the box “RUSH REPAIR,” and Auto Meter will service product within two days after receiving it.
($10.00 charge will be added to the cost of “RUSH REPAIR.”) If you are sending product back for warranty adjustment, you must include a copy (or original) of your sales receipt from
the place of purchase.
Auto Meter Products, Inc. warrants to the consumer that this product will be free from defects in material and workmanship for a period of twelve (12) months from date of the original purchase. Products that
fall within this 12 month warranty period will be repaired or replaced at Auto Meter’s option to the consumer, when it is determined by Auto Meter Products, Inc. that the product failed due to defects in material or
workmanship. This warranty is limited to the repair or replacement of parts in the Auto Meter instruments. In no event shall this warranty exceed the original purchase price of the Auto Meter instruments nor shall
Auto Meter Products, Inc. be responsible for special, incidental or consequential damages or costs incurred due to the failure of this product. Warranty claims to Auto Meter must be transpotation prepaid and accompanied with dated proof of purchase. This warranty applies only to the original purchaser of product and is non-transferable. All implied warranties shall be limited in duration to the said 12 month warranty period.
Breaking the instrument seal, improper use or installation, accident, water damage, abuse, unauthorized repairs or alterations voids this warranty. Auto Meter Products, Inc. disclaims any liability for consequential
damages due to breach of any written or implied warranty on all products manufactured by Auto Meter.
12 MONTH LIMITED WARRANTY
FOR SERVICE SEND TO: AUTO METER PRODUCTS, INC. 413 W. Elm St., Sycamore, IL 60178 (815) 899-0801
SERVICE
The “Super Bezel” is a registered trademark of Auto Meter Products, Inc.
For Email: Service@autometer.com
© 2006 Auto Meter Products. Inc. 2650-1142 3/8/06
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