Thanks KidVermicious - My father tested the hookup with some sort of electrical tester. All the lights on the truck work, just not to the trailer. I will see if I can get that panel off.
We have a 1999 T4R SR5 w/trailering pkg. The electrical outlet for the trailer hookup has absolutely no power. Owners manual doesn't tell me which fuse goes to that outlet. Where is the protective fuse located?
Thank you for your help. Wanting to take the kids camping this weekend but can't...