How to Wire a 7-way Trailer End Electrical Connector on a 2008 Chevrolet Silverado Pickup

Updated 07/31/2009 | Published 07/30/2009

Question:

where do the wires go 2 blue does what 6 brown does what ect.

asked by: richard h

Expert Reply:

If you are looking at the inside of the Trailer end connector where the wires are secured you will notice numbers and or colors printed next to each pole. There is a wiring diagram on our wiring page (see link below) that shows you where each wire is attached and what function is related to that circuit. Number one should be your ground wire (white), number two is the electric brake wire (blue), number three is the taillight wire (brown), number four is the 12 volt accessory wire (black), number five is the left turn wire (yellow), number six is the right turn wire (brown), and the center pole number seven is the auxiliary wire which usually charges the trailer battery(heavy gauge Orange or yellow).

If your connector only has colors labeled on the back it can be a bit confusing but using the above description remember that number 3 is labeled green but needs to be connected to the brown wire, number five is labeled red but needs to be connected to the yellow wire, and number six is labeled brown but needs to be connected to the green wire.

expert reply by: Robert G