27885 / 27886 Western Fisher 4 Port Wiring Harness Headlight Adapter Light 03-09 GMC C4500 C5500

The Truck Side Light adapters for trucks 03-09 Chevy and GMC C4500/ C5500. This is for the 4 port module only, the adapters are 27885 and 27886. These also come in kit 27890.

If you are just swapping trucks, you probably only need the light harness and not the complete kit. But 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 and the 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 trade in your old wiring.

We recommend getting a tube of dielectric grease 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:

2009, CHEVY/GMC, C4500
2009, CHEVY/GMC, C5500

2008, CHEVY/GMC, C4500
2008, CHEVY/GMC, C5500

2007, CHEVY/GMC, C4500
2007, CHEVY/GMC, C5500

2006, CHEVY/GMC, C4500
2006, CHEVY/GMC, C5500

2005, CHEVY/GMC, C4500
2005, CHEVY/GMC, C5500

2004, CHEVY/GMC, C4500
2004, CHEVY/GMC, C5500

2003, CHEVY/GMC, C4500
2003, CHEVY/GMC, C5500