ISSPRO R18333 - Manual (Page 2)

Form No. IS172 (Rev. G 11/21/2013)
ISSPRO, INC. • 2515 N.E. Riverside Way • Post Office Box 11177 • Portland, Oregon 97211-1899
503-528-3400 • 800-888-8065 • Fax: 503-528-3495
www.isspro.com © 2008 ISSPRO, Inc. All Rights Reserved.
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  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 one wire of the
included fuse holder using the included crimp splice, and the
other wire of the fuse holder connected to a circuit that switches
on with the key switch. Install the included 1 amp fuse in the
fuse holder.
 Use only 1 amp fuses, higher amperage fuses may cause
damage to the gauge or to the vehicle.
• 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.
Figure 2: Connector.
1 Red Ignition
2 Orange Dimmer
3 Black Ground
4 Red/Yellow Sensor
Power +5V
5 Green Sensor
6 Black Sensor
Ground
Slide the white dust cover over the orange connector once the wires are securely installed.
Connect the red, orange and black wires to the orange connector as described above, in positions 1, 2,
and 3 respectively. Slide the white dust cover over the orange connector once the wires are securely
installed. NOTE: The gauge backlighting will only illuminate if both the ignition supply AND the
backlighting circuits are on.
 The lighting harness is designed to be used with Performax EV² gauges. DO NOT attempt
to use this harness and potentiometer with any other gauge types.
OPTIONAL: Daisy Chain Your Gauges – If multiple Performax EV
2 gauges are being installed in one
location (such as a pod), you may use a single set of the Ignition, Ground, and Dimmer wires to connect
all of the gauges. Simply pass the wires from one orange connector to the next one in a “daisy chain”
configuration. A single 1-amp fuse will protect up to 12 EV 2 gauges.
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 Install the connector onto the back of the gauge (angled portion on
end of connector pointing up as shown in photo) , and then secure the
gauge in its mounting location. If drilling a mounting hole in a panel to
mount this gauge, the hole size should be 2.040”. Mounting Kit R19999
is available for larger mounting holes up to 2.200”.
 NOTE!!! The orange connector MUST be installed in the direction shown. It is possible to force
it in backwards far enough to make an electrical connection which may damage the gauge!
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 Secure all wiring so that it does not interfere with moving parts or chafe on sharp edges. This may
be accomplished by routing the wiring within the factory wire harness sheath, using wire ties and
sheathing, and using appropriate grommets when passing through the firewall.
Pin #6
Pin Numbers
1
2
3
4
5
6
Dimmer (orange)
Ground (black)
Sensor Ground (black)
Ignition (red)
Sensor Power +5V (red/yellow)
Sensor (green)