I have a 95 S-10 and it has the 7 wire trailer harness. I have the 7 blade RV socket all wired up in back to the harness and working. My problem is, I can't seem to locate the blue trailer brake wire under the dash. Can someone lead me to it?
Mike

 

Never mind, I found it in the engine compartment by the firewall on the driver side. It was just the blue wire with no end or terminal on it. It was dirty , so it was hard to see.

 

Fascinating. I'm trying to find mine. Was it with other wires in one of those plastic tubes, or just chilling out? did you have to remove anything in order to find it?