Which Pin of Trailer 7-Way is Running Light Circuit

Published 12/20/2018

Question:

I am trying to figure out what the wire pattern is for 09 Dodge 2500 heavy duty the issue Im having is I have all my lights on my trailer except running lights but what I hook my trailer to another truck everything is there Ive narrowed it down to it being the wiring harness but I cannot figure out what wires are what can you help please

asked by: Mick

Expert Reply:

On a 7-way connector the running light circuit is the pin in the 10:00 position as you face the connector opening on your truck. I attached a picture that has a full 7-way diagram for you to check out as well. Most likely it's a dirty or corroded pin but it could also be a blown fuse too so you might check that as well.

expert reply by: Jameson C