Short story: No running/markers lights on trailer. Turn and brake signals work.
I purchased a 5x8 utility trailer
yesterday. Other than needing to downgrade to a 1-7/8" ball, I thought my Pathy was all set. From a towing perspective, I have a stock 2006 with the factory 4-wire harness. I do not have the 6-pin relay that goes in the engine compartment fuse box.
The salesman/manager did the customary light check after hooking up the trailer. I did not have any running/marker lights on the trailer. I did have turn signals and brake lights. We switched trailers to check that it wasn't a trailer wiring issue and the problem persisted. At that point, the manager doubted it was a trailer issue and I said that's fine and would have it check. Thankful, it was still daylight so running lights weren't important.
Tonight, I tested the 4-wire plug with my trusty multimeter. As expected, I had voltage on the left stop/turn pin (yellow wire) with the left turn signal on. I did NOT have any voltage on the running light pin (brown wire) with the headlights on.
The plug has been capped except when in use and there is no signs of rust/oxidation on the contacts. Other than checking for the relay, I have not scrutinized the fuse panels.
Is there something obvious I should be checking for? Do I need the "big towing" relay for the running lights pin to be powered on the 4-wire harness?
Thanks for the assistance.