8
16992140 Rev C
small terminal of the MOTOR RELAY. The other is connected directly to vehicle/chassis ground.
5.
The large (4 gage) BLACK WIRE on the CONTROL HARNESS must be connected directly to the
NEGATIVE (-) battery terminal. A BATTERY TERMINAL ADAPTER may be required.
6.
The large (4 gage) RED WIRE on the CONTROL HARNESS is connected to one of the large terminals on
the MOTOR RELAY.
7.
The shorter red BATTERY CABLE is used to connect the other large terminal of the MOTOR RELAY
with the POSITIVE (+) terminal on the battery. A BATTERY TERMINAL ADAPTER may be required.
8.
The CONTROLLER CONNECTOR is routed through the firewall. Wait to complete RELAY HARNESS
installation before further steps.
9.
Connect the handheld controller and locate in a convenient location for the operator using the included
mounting bracket or Velcro.
10.
Male spade connectors on the BLACK and RED/WHITE wires will be connected to the LIGHT
HARNESS in the next step.
light Harness
1.
Route the RELAY HARNESS through the grill (drivers side preferably) and place the RELAY MODULE
close to either the drivers or passenger side headlight (whichever is convenient).
2.
A VEHICLE SPECIFIC HEADLIGHT ADAPTER for your plow should be installed between the OEM
HARNESS and HEADLIGHT on both the passenger and driver sides. The BROWN wire from the adapter
should be spliced into the PARKING light circuit. The PURPLE wire from your adapter should be spliced
into the TURN signal circuit.
3.
Route and connect the 8-pin connectors on the RELAY HARNESS to the VEHICLE SPECIFIC
HEADLIGHT ADAPTERS. There is a LONG and SHORT cable on the RELAY HARNESS. The LONG
cable is for the far side of the vehicle. Both CABLES are identical. LEFT and RIGHT turn signals will be
determined prior to routing the LIGHT HARNESS on the plow.
4.
The ORANGE and BLACK/WHITE wires on the RELAY HARNESS are connected to the RED/WHITE and
BLACK wires on the CONTROL HARNESS. Connect them as shown below – see the application guide for spe-
cific information on your vehicle. In the case of a standard ground vehicle (switched hot), connect the wires as
shown below for standard configuration. In the case of a switched ground vehicle, locate the gray wire with male/
female disconnected fittings (already connected). Disconnect the two halves. The male quick connect end of the
wire will not be used and may be taped off. The female end will be connected to the RED/WHITE wire from the
BLA
CK/
WH
ITE W
IRE
ORA
NGE W
IRE
TO HEADLIGHT
ADAPTER (1607XXXX)
TO HEADLIGHT
ADAPTER (1607XXXX)
16160100 RELAY HARNESS
THROUGH TRUCK GRILL
Light harness Diagram
