Hi guys not sure what's going on? Have a 2020 F250 7.6 and just bought a 2021 Enclosed trailer and there is 12 volt light's inside that run off the + 12 feed line in the trailer plug on the truck. Its at the 7 clock position looking in to the plug on the truck. I check the trailer its perfect and truck should be to? 3,500 Miles but the 12 Volt feed from truck work's and does not?? Like its on a timed relay?? What turns that feed on and off?? I confirmed with a test light no power there? Then it will have power?? HELP LOL
Thank you
Thank you