Guys and gals I need your help. I've been working on vehicles most of my adult life and wiring has never been a problem. Today I rewired my car hauler trailer and replaced all the original wiring due to corrosion and it was too light to start with.
The 7 pin wire on the trailer makes connections in a terminal box I bought from Amazon that is really nice but was made in China. They wire things differently than we do. I cross referenced everything, ran my new wiring and wired it according to Ford color codes. I thought.
Somehow (I'm 70 years old, that explains most of my confusion) I managed to put the left turn wire on the electric trailer brake post. End result was I'm testing everything out and the turn signals that had worked on the trailer no longer do even after I corrected my mistake. Nothing on the trailer lights work except the running lights. To make matters worse I unplugged the trailer and tested out my truck. I have tail lights, flashers but no left brake light. I'm guessing I blew a fuse but modern fuse panels don't just come right out and say "brake lights". They have things like "Brake 0n-off lamp", Trailer brake turn signal", etc.

Truck is a 2006 F350 dually 4x4. Can someone tell me in plain ol codger english which fuse I should be looking for? I want to get the truck back right first. Then I'll figure out the trailer.
Thank you kindly!

Ron

 

Do you have brake lights on the truck?

 

Yes but only on the passenger side. No brake light on drivers side. Everything worked on the truck before I plugged the trailer in. After unplugging the trailer only the passenger side has a brake light.

 

Would a wiring diagram picture help?
Here is a link to the site with the color codes
https://www.ajtnt.com/Info/7-Way-Diagram

Here is the picture from the site of them.

After getting the truck side working, I'd double check that you wired it correctly.
All try googling the truck side for ya.

 

My first thought would be the flasher relay. I had a 2006 F150 and it went bad twice. After that I'd suspect the turn signal switch.

 

After a little googling, maybe this site would help you with the fuses.
Simply hover your mouse over each fuse to see what they do and either write it down and take to the truck to confirm or snap a picture with your phone of it.

Site with fuse locations
https://www.startmycar.com/us/ford/f...o/fusebox/2006

I'd start by checking fuse #17 Exterior lamps first. Blue 15 amp fuse towards left side.
Also #38 bottom 20 amp yellow fuse next to the horn fuse.

Another way of doing this thats pretty easy is getting a test light.
Link to amazon test light.

No idea if you've ever used one before so all explain it, its really quite simple really.
Take your ground clamp from the test light and clip it to literally any ground you find on the truck, under the dash it can be any bolt usually.
Your literally just going to tap each side of the fuses to make sure you get a light on BOTH sides. If a fuse only lights up on one side, then pull it out and check to see if that ones blown.

 

Thanks for that guys. Especially the diagrams. It’s raining today so it’ll have to wait but these are great starting points.