Harbor Freight Tools 98480 User Manual
2-1/16” LED
98480
TACHOMETER
INSTRUCTIONS AND PRECAUTIONS
Distributed exclusively by Harbor Freight Tools®.
3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit our website at: http://www.harborfreight.com
SAVE THESE INSTRUCTIONS. READ ALL
PRECAUTIONS AND INSTRUCTIONS.
Copyright© 2008 by Harbor Freight Tools®. All rights reserved. No portion of this document or any artwork contained
herein may be reproduced in any shape or form without the express written consent of Harbor Freight Tools.
Diagrams within this document may not be drawn proportionally. Due to continuing improvements, actual product
may differ slightly from the product described herein.
For technical questions or replacement parts, please call 1-800-444-3353.
UNPACKING
When unpacking, check to make sure that
the item is intact and undamaged. If any parts are
missing or broken, please call Harbor Freight Tools
at the number shown on the cover of this document
as soon as possible.
IMPORTANT SAFETY
INFORMATION
Assembly Precautions
Assemble only according to these instruc-1.
tions. Improper assembly can create haz-
ards.
Wear ANSI-approved safety goggles and 2.
heavy-duty work gloves during assembly.
Keep assembly area clean and well lit.3.
Keep bystanders out of the area during as-4.
sembly.
Do not assemble when tired or when under 5.
the inuence of drugs or medication.
This product is not a toy. Do not allow chil-1.
dren to play with it.
Use for intended purpose(s) only.2.
Inspect before use; do not use if loose or 3.
damaged.
Only use in accordance with State, local, 4.
Federal and D.O.T. laws and regulations.
Disconnect vehicle battery negative connec-5.
tion before installation.
Positive and negative connections can not 6.
touch. If you are unsure of how to install this
product safely then have a qualied mechanic install the gauge for you.
Insulate connections to prevent re.7.
Maintain product labels and nameplates. 8.
These carry important safety information.
If unreadable or missing, contact Harbor
Freight Tools for a replacement.
Use Precautions
ASSEMBLY INSTRUCTIONS
Read the ENTIRE IMPORTANT
SAFETY INFORMATION section at the
beginning of this document including
all text under subheadings therein
before set up or use of this product.
Assembly
A round 2-1/16” wide hole with at least 2-1/2” 1.
clearance behind is needed to install this
gauge.
At least 18 AWG stranded copper wire must 2.
be purchased for the installation of this
gauge.
Disconnect vehicle battery according to 3.
manufacturer’s instructions. Some vehicles
with air bags or other systems may require
precautions before disconnecting the battery.
Consult your vehicle’s service manual.
Move the cylinder selection switch to match 4.
the number of cylinders on the vehicle (4, 6,
or 8).
Route and secure wires as needed to attach 5.
the Gauge to the desired area; avoid sharp
edges and hot spots.
Night Lamp
WHITE wire connects to the dash lights.•
ORANGE wire connects to the 12V posi-•
tive post.
GREEN wire connects to the to the nega-•
tive side of the ignition coil.
Note: The wiring diagram is for a conventional
ignition system. If the tachometer is being
installed on a vehicle that has an electronic
ignition, or aftermarket high output ignition
box, it is recommended that the ignition box
manufacture be consulted for the correct
tachometer signal point.
Attach the bracket onto the back of the meter 7.
and tighten. Install the meter into the hole.
Reconnect the battery according to the 8.
manufacturer’s instructions. Verify that there
are no short circuits before reconnecting.
Check for loose strands of wire and direct
contact with grounded components. Use a
multimeter with a continuity function to help
verify that there are no shorts to ground.
Turn the ignition switch “ON”, LED should 9.
light up. Be ready to disconnect battery if
arcing or sparking occurs at the meter.
To change the color of the LED light, push 10.
the button on the face of the gauge.
Record Serial Number Here:
Note: If product has no serial number, record
month and year of purchase instead.
Note: No replacement parts.
6. Wiring:
RED Wire: Connects to a switched 12V •
positive source that turns on and off with
vehicle’s ignition switch.
CAUTION: It is recommended that a inline fuse
(1Amp/3AG) be installed before connecting
to the 12V ignition system.
BLACK wire connects to Ground.•
REV 09e
SKU 98480 For technical questions, please call 1-800-444-3353. Page 2
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