Lit. No. 41298, Rev. 01 February 15, 2019
58
TROUBLESHOOTING
SNOWPLOW PARK/TURN LAMPS*
Incorrect Operation or No Park/Turn Lamps
BASIC CHECKS SOLUTIONS
1 OEM park/turn lamps working. Refer to vehicle owner's manual for fuse location and size.
2 Harnesses connected between vehicle and snowplow (all). Harnesses must be connected for all snowplow and headlamp functions.
3 Clean harness connectors. Replace as needed.
4 Ignition ON. Ignition must be ON for snowplow headlamps to operate.
5 Control powers up with key ON. Go to Control/Cable/Plow Module Test.
6 15A park/turn fuse good in #1 harness. Replace with proper fuse.
7 Black/orange "ground" wire connected to motor ground stud. ** Refer to Isolation Module instructions.
8 Spliced into OEM park/turn circuit correctly. Refer to Isolation Module instructions.
9
Harnesses in correct location at Isolation Module and installed per
installation instructions.
Install using Isolation Module instructions.
10 Harness wired per drawing. See electrical schematics in this guide.
11 Verify power and ground in proper pin locations at Isolation Module. See electrical schematics in this guide.
12 Verify power and ground in proper pin locations to vehicle headlamp. See electrical schematics in this guide.
13 Bulb good. Replace with proper bulb.
* Some applications may use the turn circuit for DRLs.
** Not applicable to INTENSIFIRE™ headlamps.
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