I Need some help here.
The lights on my trailer start off bright and then over 20-30 minutes they go very dim, you can barely seem them burning.
After a few minutes of being very dim, they suddenly go bright and start the whole dimming process over again. It happens to all the lights on the trailer at the same time.
This is something that just started happening last year. I've checked the plug and ground and all seem to be making good contact.
Any ideas?