In the morning I will be starting my trailer light plug install. I have a seven wire plug that also has a four wire plug attached to it. I got it at Home Depot in the clearance rack for something like $10, but that’s whatever. The part that was confusing me was the VX “5 wire” system.

After searching the site, I found this thread: http://www.vehicross.info/showthread...-for-a-trailer

This is awesome, mostly because it tells me what color wires to look for. From the thread:
RT Turn Signal Wire Color (only avail on the Passenger Side): Green/Blue
LF Turn Signal Wire Color (only avail on Driver's Side): Green/Blue
Parking/Running Light Wire Color: Green/Red
Brake Light Wire Color: Green
Basically I need to get the turn signal and brake light onto the same wire without allowing feedback to mess everything up. Yes, there are converter boxes, and they are cheap as all get out (I think like $11 or $12 on amazon). However, I already have a solution that is a holdover from my Toyota Tacoma bed lighting project. Diodes!!!

Yup, I already had this issue when trying wire 22 LED light strips in the bed of my Tacoma and I needed a way to control them. I used a 2 inch long piece of 1/2 inch PVC pipe, some wire, and two high-capacity diodes. I ended up making two of these. It has two inputs, and one put, and keeps the two inputs isolated from each other. Basically it was way to turn on lights on only one side of the bed or the other, or to turn them all on. It was a really simple solution that worked well.

Since I kept all of that wiring, lights, switches, and what not, I still have these two pieces I made, and after testing, they still work. I just need to wire them to the plug and I am in business! I can start wiring up the rest of the plug.

Yes, I intend to hook up all of the wires, including the brake controller, backup lights, and AUX power wires. Though the brake controller and AUX power may wait for a bit. The rest is getting hooked up in the morning for sure, and as long as it doesn’t get scorching hot again tomorrow, I will run the wiring for the power and brake controller.

I needed to put a rush on this as I will be borrowing a neighbors utility trailer to haul off the scrap from a fence I am taking down later this week, but that’s a whole other thing.