7-Pin No Running Lights
Just hooked up and ready to pull out tomorrow morning. All lights; brake, signal, emergency, and brake controller work fine. No running lights. I have the diagram for the 7-pin connector. I have c...
Forum Discussion
RoyB wrote:
You need to determine if it is a problem with the trailer or truck. This is where my 7-way test adapter listed earlier comes in handy
You can also test your running lights on the trailer by just using a short wire between blades 3 & 4 on the trailer cable PLUG end. Your trailer battery has to be functional to do this.
Roy Ken
Thanks for the advice. I did what you said this morning and there are trailer lights. Next step, truck fuse.
