Fishing wires for 3rd brake light. Can’t seem to make it work.

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Gander

Full Access Member
Army
Joined
Aug 27, 2025
Posts
156
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178
Location
Dirty Bay, TX
First Name
Lawrence
Truck Year
1987
Truck Model
V10
Engine Size
350 TBI
Any advice on how to get this done? I’ve got a factory cargo light, and I bought the United Pacific LED replacement for its bulb/lens. This thing also had red LEDs in it that work as a 3rd brake light. I know where to wire it up at the brake switch, or at least I think I know hahahaha! What I can’t figure out is how to fish the wires down to the floor to run under the door sill plate and up to the brake light switch. I took the cargo light off and also the cargo light switch out and tried to push some baling wire through but just couldn’t get it. Any tips on how I can get this to work?
 

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