Quote Originally Posted by Meltedmetal:296969
So if you remove a lamp assembly and jumper it to a battery . white to neg, then either the brake or the running lights will light but not both together?
If I'm direct to the battery. It all work's. Like its supposed to. My last option would be to take it to a trailer manufacturing comp. To figure it out but that's going to cost me $70. I rather go back to the old bulb style.