Rear light harness install
 

I'm preparing to swap out the rear light harness on a '72 Fleetside bed and wanted to get any tips I might benefit from before tearing into it from members that have done this.

What needs to be removed, how to fish the wires up to the tail and reverse light buckets, etc.

Thx!!

Re: Rear light harness install
 

Spend the time to make sure the ground connections are good electrically and use some sort of corrosion protection on each of them. This will save you heartaches down the road.

Re: Rear light harness install
 

The rear harness plugs into the wire loom on the left side of the rear crossmember. From there it go back along the frame to the last crossmember in the bed. You simply take the left side marker wire and taillight wires (I dont recall the colors) yellow left green right I believe. And run the harness over to the right tail light. If the factory clips are good, great use them but they're usually gone or broken, I use these, https://www.homedepot.com/p/NSi-Indu...50-0/307350017 to fasten the wires up out of the way with self drilling tec screws. The license plate light will have one wire at the center while the remaining longer wires are for the right marker and taillight. The bed needs to be well grounded to the frame. the marker lights are grounded to the inner bed and are usually toast. I just replace the marker light ground wires with a longer wire to reach the frame. They're pretty self explanatory, just be ready to replace or repair the grounds as you go. Same way under the hood, ground from battery to engine block and I add another ground to frame and two frame to inner fenders and frame to cab. Two frame to bed and your golden...Use these or similar https://www.amazon.com/dp/B08DMMCY5N...T1zcF9kZXRhaWw