Good job!
Just so happens I'm muddling through electrical issues too. Last time I put the flatbed behind the truck all the lights worked at the start but halfway through the job the right taillight went dark and there were no right blinkers on anything.
First place to look: bad bulb. So I get the assembly outta the grommet only to find it's a
SEALED UNIT.
That's right- a 99 cent bulb blows and PETERSON MANUFACTURING in Misery- I mean, Missouri (Yes I'm calling you out
PETERSON MFG) thinks I am going to hunt down a store that carries these and pay over $10 for it or order it online and sit around waiting for it to be shipped?!? I think not! Out came the hand saws and I lobotomized the dang thing from the back and replaced the bulb. Take THAT PM.
But wait! That wasn't the problem! That was the symptom of connection issues upstream, like a dead short.
So the replacement bulb lets out all it's magic smoke and goes dark too. Hmmm. Unplugged the trailer harness, put bulb #3 in, and tried again with the pickup all alone. Blinkers on the truck!
my suspicions centered around the stub harness from the socket connector to where it splices in with the truck harness. Examination showed several weak points- corroded wires and retention screws in the socket, corroded icky looking splices with wire nuts, and the like.
After a major manhunt to try to locate that can of Brasso I KNOW I have (but haven't found) I jumped online and jogged my memory (about the only jogging I do anymore) that vinegar and salt make a nice brass and copper corrosion cleaner. I went all OCD on that whole stub harness, scrubbing and soaking and trimming back wires until all looked shiny and new. This time all the wire tips are getting soldered and it's getting all gooped up with di-electric grease too. And I'm gonna tape everything shut against the elements. The lobotomized light has it's skull section Gorilla Taped back in.
Too late to lay out in the cold, dark, windy driveway tonight to see if it works... hopefully tomorrow.