26638 Western Fisher 4 Port 7 Pin Headlight Harness Isolation Module Truck Side Kodiak Topkick GMC 4500 5500

The Truck Side Light Wiring for 90-96 Kodiak and Topkick trucks and the 97-2002 Chevy and GMV 4500/5500. The light harness is part #26638. If you are just swapping trucks, you probably only need the light harness and not the complete kit. If you also need a module, kit #8446 is the best deal. This is the same for Fisher and Western. This is the 4-port isolation module/3-plug set up.

Western went from relay wiring to 4-port wiring, to 3-port wiring and now Multiplex wiring. We have all of these options available. We will also accept trade-of your old wiring.

We recommend getting a tube of dielectric grease as well to protect these plugs.

Click here to use the Western Power Match to get the correct light harness.

Here is a link to the Western Wiring Schematics Guide.

Below is the list of trucks this kit was used on:

2002, CHEVY/GMC, 4500/5500 (Low Pro)
2002, CHEVY/GMC, 4500/5500 T-40
2002, CHEVY/GMC, 4500/5500 T-50

2001, CHEVY/GMC, 4500/5500 (Low Pro)
2001, CHEVY/GMC, 4500/5500 T-40
2001, CHEVY/GMC, 4500/5500 T-50

2000, CHEVY/GMC, 4500/5500 (Low Pro)
2000, CHEVY/GMC, 4500/5500 T-40
2000, CHEVY/GMC, 4500/5500 T-50

1999, CHEVY/GMC, 4500/5500 (Low Pro)
1999, CHEVY/GMC, 4500/5500 T-40
1999, CHEVY/GMC, 4500/5500 T-50

1998, CHEVY/GMC, 4500/5500 (Low Pro)
1998, CHEVY/GMC, 4500/5500 T-40
1998, CHEVY/GMC, 4500/5500 T-50

1997, CHEVY/GMC, 4500/5500 (Low Pro)
1997, CHEVY/GMC, 4500/5500 T-40
1997, CHEVY/GMC, 4500/5500 T-50

1996, CHEVY/GMC, KODIAK, TOPKICK

1995, CHEVY/GMC, KODIAK, TOPKICK

1994, CHEVY/GMC, KODIAK, TOPKICK

1993, CHEVY/GMC, KODIAK, TOPKICK

1992, CHEVY/GMC, KODIAK, TOPKICK

1991, CHEVY/GMC, KODIAK, TOPKICK

1990, CHEVY/GMC, KODIAK, TOPKICK