Tan1998K2500
Newbie
I know it's been over a year and I'm just now seeing this. I also went out to my truck and took pictures so you can see everything so hopefully it helps.The Plug On the Truck Side that goes into the 3rd brake light. Cut the wire and ground the pigtail side on its own to the truck. Other end truck side, cap/seal it so it doesn't cause issues? which wire is it?
You must be registered for see images attach
You must be registered for see images attach
So that white wire that is capped off is the original ground for the cargo lamp and it goes into the A pin on the connector. The black wire right next to it is the ground for the 3rd brake light. What you need to do is cut the white wire going into A and cut the black wire going into B. You'll connect the ground wires together on the connector side and reconnect that to the single black wire on the truck side. Then cap off the now single white wire otherwise your dome lights will never turn off again. And as shown in the picture, the connector is labeled what pin is what letter, it goes to D. You only need to mess with A and B for this