28400 Western Fisher H13 4 Port Wiring Harness Kit Isolation Module Truck Side Light Harness

The majority of the 4 port wiring has been discontinued, including this kit. You will need to upgrade to the 3 port module system, using these 3 parts:
29049 Headlight Adapter Kit (for H13 lights)
29070-1 3 Port Isolation Module
29047 3 Port Adapter

The Truck Side Light Wiring Kit for trucks with H13 headlights. The part # on this kit is 28400. We have all the others available, too. You get the 4-port module 26400, 26357 truck side 11-pin light harness, 28242 short harness, 28244 long harness and parts bag 26395. If you are just swapping trucks, you probably only need the light harness and not the complete kit. If you need a module too, the kit is the best deal. This is the same for Fisher and Western. This is the 4-port isolation module usually used on the 3-plug (at the grille) setup. We also recommend getting a tube of dielectric grease to protect these plugs.

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 trade in your old wiring.

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

Here is a link to the Western Wiring Schematics Guide.

Here is the list of trucks this kit was used on. Some of the vehicles below require an additional adapter: