Trailer wiring

[rev500ss]

Good morning everyone, after picking up my new to me 5th wheel I was having intermitten running lights on my way home.

When I went to purchase the trailer it was parked at a campsite for the last two years. During those two years the previous owner removed the pin box so that there was less chance of walking into it while moving around the trailer.
When removing the pin box you also need to undo all the wires for the trailer.
I suspect when he put it back on and re attached the wires he crossed a few giving me wiring issues.

Can someone please take a picture of their wiring in the junction box on their 5th wheel.

I have figured out brake lights and turn signals, but I don't have running lights or trailer brakes.

Thanks in advance.

[Ddubya]

Generally the wiring is color coded.

https://www.etrailer.com/faq-wiring.aspx

[rev500ss]

I would agree with you, as long as no one has worked on it in the past and changed things.
Never know what some backyard mechanic has done to it.