trailer wiring problems
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Senior User
Joined: Jan 2008
Posts: 322
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From: Simsbury, CT
trailer wiring problems
Ok so I posted a couple days ago about how to fix my trailer wiring and with your help went to tractor supply to get what I needed.
I got this: http://www.tractorsupply.com/wcsstor...50/0143002.jpg
which flawlessly installed into my harness with just a snap. then I got this:
http://www.tractorsupply.com/wcsstor...50/0143222.jpg
which converts that 4 way to 7 way by using a ground (white), a trailer brake supply wire (blue), and a trailer accessory wire (black). I got the ground and trailer brake supply wire all hooked up but couldn't figure out what the black wire is meant to be connected to. Frustrated I went to hook up to a trailer and I had nothing, no stop, no turn signals, no running lights. The trucks were still working but it wasn't communicating to the trailer.
So my questions are:
1. Which wire does the black one connect to
2. Why won't it work!?
Thanks,
-Chris
I got this: http://www.tractorsupply.com/wcsstor...50/0143002.jpg
which flawlessly installed into my harness with just a snap. then I got this:
http://www.tractorsupply.com/wcsstor...50/0143222.jpg
which converts that 4 way to 7 way by using a ground (white), a trailer brake supply wire (blue), and a trailer accessory wire (black). I got the ground and trailer brake supply wire all hooked up but couldn't figure out what the black wire is meant to be connected to. Frustrated I went to hook up to a trailer and I had nothing, no stop, no turn signals, no running lights. The trucks were still working but it wasn't communicating to the trailer.
So my questions are:
1. Which wire does the black one connect to
2. Why won't it work!?
Thanks,
-Chris
Postmaster
Joined: Nov 2009
Posts: 4,556
Likes: 0
From: Crapy southern New Jersey
Chris The black wire is a hot 12volt wire. I beleave it used for charging the battery for the break away. Take a test light and put your 4 ways on and test the pins, If it lights up then you have power there. Lot of trailer have a ground problems that make them not work right. No ground = no lights.
-Doug
-Doug
Postmaster
Joined: Nov 2009
Posts: 4,556
Likes: 0
From: Crapy southern New Jersey
Thread Starter
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Senior User
Joined: Jan 2008
Posts: 322
Likes: 0
From: Simsbury, CT
Thanks doug, only thing is that I towed that exact same trailer a week ago with my buddies '05 F-350 6.0 and it worked perfect. I'm just anxious to see what my old girl can do!
