How to Determine Wiring Functions of 7-Way Wires on a Truck

Question:

I pulled my tow harness on my 2012 dodge ram out of the box on my 2013 Open Range RV...just need to know where the colors match up in the box..i have tied all the whites together and i assume the black ties into the 12V and blues are together for the brakes...i have a green, brown and grey wire that im not sure where they tie into...stuck in the middle of nowhere...thanks

asked by: Eddie

Expert Reply:

I don't know the color codes for your trailer connector so you will need to use a circuit test like part # PTW2993 to determine the function of each wire, label them, and then wire to the 7-way.

Or you can use the chart I attached to see where the functions of each pin on your 7-way should be and then use the previous wiring locations of the 7-way to determine the functions of each wire.

expert reply by: Jameson C