ISSPRO R17900 - Manual

Form No. IS174 (Rev. D 8/27/09 )
ISSPRO, INC.  2515 N.E. Riverside Way  Post Office Box 11177  Portland, Oregon 97211-1899
503-288-4488  800-888-8065  Fax: 503-249-2999
www.isspro.com © 2008 ISSPRO, Inc. All Rights Reserved.
FUEL LEVEL GAUGE INSTALLATION
INSTRUCTIONS
Models: R11900 R12900 R13900 R14900 R14901 R15900
R16900 R17900
1  Disconnect batteries. Do not reconnect battery power until
system is fully configured to avoid risk of shock or fire.
2   Connect the sensor to the sensor harness by pressing the
connector into the slot.
I C O N K E Y

CAUTION

Tools may be required

Shown in picture
3 Route the sensor harness to the intended gauge mounting location, using grommets as appropriate
when passing through the firewall. Connect the sensor harness to the gauge connector as follows:
4   Trim wires to desired length. The green and black wires are the sensor and ground
connection, and connect to cavities 5 and 6 of the orange connector respectively (see Figure 1).
 Install the two wires into the insulation displacement connector (orange connector). Carefully
lay the wires across the connector cavities, hold the connector steady with a vice or pliers and press
the wires into each cavity with a small screwdriver. Each wire must be pushed completely to the
bottom of its groove in the connector, to ensure a good electrical connection.
5   An optional wiring harness is available (ISSPRO P/N R72022) to
simplify wiring and provide a potentiometer for reducing the brightness of
the gauge lights while still following the vehicle dimmer level. If this
dimming function is not required, you can substitute your own 18 gauge
wires in place of the harness, using a single wire in place of the orange and
orange/black wires. Connect one end of each of these wires as follows:
 Ground – The black wire should connect to a clean ground on the
vehicle such as the battery negative terminal or a factory ground
bolt.
 Ignition – The red wire should be connected to a circuit that
switches on with the key switch.
 Wire should be fused so as not to exceed 3 amps. If the circuit
does not have a fuse, or the existing fuse is higher than 3 amps, use
an inline fuse.
Figure 1: Connector.
1 Red Ignition
2 Orange Dimmer
3 Black Ground
4 Empty
5 Green Sensor
6 Black Ground
 Dimmer – Connect the orange/black wire to the factory gauge dimmer circuit by either
tapping into the in-cab fuse block or by connecting directly to the wire running from the
dimmer on the headlight switch.