Jegs 41535 User manual

Installation Guide for 41535
Fuel Gauge Interface Module
73-10 Ohm Sender to 0-90 Ohm Gauge

Read Before Installation Wiring
Thank you for purchasing this 73-10 to 0-90 ohm
fuel gauge interface module.
This module can be used on vehicles with a dissimilar
fuel sending unit and gauge. It converts the input
resistance signal to the target resistance signal. The
full, half, and empty positions can be programmed.
Please be sure to verify that the ohm range of both
components matches this converter. The sending
unit must use a 73-10 Ohm range, while the gauge
must use a 0-90 Ohm range.
Installation of this kit can be done with basic hand
tools. Necessary tools include screwdrivers, wire
snips, and wire crimpers. For a more secure wiring
connection, soldering is suggested.
It is important to note that un-dampened gauges
may buzz if the module’s output is an NPN pulse
width modulated signal.
If you are having issues, or have any questions
regarding the installation of this piece, please contact
our technical support department at: 1.800.345.4545.
Return Information: Before modifying any of the
wiring in this unit, please trial fit all components.
Modified parts will not be accepted for return.
• RED: Connect to 12 volt ignition-on wire so
the module has power when the vehicle is on.
• YELLOW: Connect to fuel level sender output.
• BROWN: Connect to gauge signal input.
• BLACK: Connect to common ground with the
fuel level sender and gauge.
IMPORTANT: Gauge, interface module and fuel
level sender need to have a good common ground
for the most accurate reading.
1
Installation
• Install the module in a clean, dry, cool location
(vehicle cabin, rather than engine bay).
• To access the programming buttons and
calibration screw remove the two screws
on the module cover. Replace cover when
programming is complete.
• Use STORE MODE to program and store the
Full, Half, Empty, and Power On positions.
• Use POWER ON MODE to program how you
want the gauge to operate when the vehicle
power is turned on.

2
Store Mode
IMPORTANT: To avoid hysteresis error, program
the Full position first, then the Half position, then the
Empty position (i.e. move sender from Full to Empty
when programming). Some gauges are very slow to
move, allow time for the gauge to stabilize.
1. Turn the module power off and wait at least 5
seconds. Press and hold the F button (right side
button) while turning module power on. Once power
is on release the F button. The red LED will turn on.
2. Set the full tank position. Adjust the gauge
pointer position to full by turning the
calibration screw on the module. When the
pointer is calibrated press the F button one time
(right side button) to save the gauge full position.
3. Set the half tank position. Adjust the gauge
pointer position to half by turning the
calibration screw on the module. When the
pointer is calibrated press the H button one time
(middle button) to save the gauge half position.
4. Set the empty tank position. Adjust the gauge
pointer position to empty by turning the
calibration screw on the module. When the
pointer is calibrated press the E button one time
(left button) to save the gauge empty position.
RUN MODE (Normal Operating Mode)
1. Turn the module power off and wait at least 5
seconds.
2. Turn the module power on.
3. Green LED will turn on.
STORE MODE Notes:
1. Turn the calibration screw counter-clockwise
to DECREASE the ohm signal to the gauge.
Turn the calibration screw clockwise to
INCREASE the ohm signal to the gauge.
2. When programming the full position it may take
5-10 complete turns of the calibration screw to
get the pointer to start moving.
Programming

Power On Mode
3
The Power On Mode allows you to program the
position of the fuel level gauge pointer when the
vehicle is started.
1. Turn the module power off and wait at least
5 seconds.
2. Program the desired POWER ON mode option
(A or B):
A. To program the module to start at the current
sender position (recommended): Press and
hold the E button (left button) and turn the
module power on. Release the E button.
B. To program the module to start at the
set the POWER ON position
•
Adjust the calibration screw to the position
you would like the fuel level gauge pointer
to be positioned when the car is started
(this is typically to the left of the gauge
Empty position). Press the E and F
buttons simultaneously one time to save
the POWER ON position.
•
Press and hold the H button (middle button)
and turn the module power on. Release the
H button.
3. Green LED will turn on once POWER ON mode
option has been selected.