No trailer running lights, brake/turn ok. 2010 E-150
I could sure use some help here. Trailer running lights inoperative, but brake/turn signal ok. I've seen suggestions in this forum for fuses and high voltage relay but all check out ok.
This is a brand new Ford passenger van and brand new Haulmark 6x12 cargo trailer. Factory installed tow package.
Any suggestions? I'm afraid it's the converter. Can you help me rule that out?