Hi, I have a 97 Ranger that is COMPLETELY FINE as long as it’s not towing my trailer. All the lights work properly. When I hook it up to the trailer, the lights on the truck still work, but I can only get 4-way flashers to work on the trailer. Obviously, the problem is in the trailer, right? Well, when I hook up the same trailer to a different vehicle, everything works fine. (The only issue when I towed the trailer with another vehicle was that the wheel well running lights would turn off when I applied the brakes.)
Also, when I am towing this trailer with the truck, the clock on the radio goes out whenever I brake. This does not happen unless the trailer is hooked up. The radio clock comes back on again when I let up on the brake. If I brake and then put on a turn signal, the clock comes back on. Weird, huh?
I would suspect a fuse, but obviously if a fuse was blown the lights on the truck itself would not be working. It’s acting like there’s not enough electricity in the truck to power everything at once. I’ve tried spraying some electrical connection cleaning product in both the male and female connections, and tried swiping out the female end with a nail, but no luck.
Any luck? Thanks.