7-way trailer connector wiring
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July 11, 2012 08:11 PM - 650 Views
I want to wire a 7-pin trailer connector into my '56 F-100. Everything is straight forward for 6 of the 7 pins (+12 volts, tail lights, rt & lt turn/brake,and ground). I am stumped on the electric brakes. Where does that wire hook into? I would assume that it power for the brakes. I have towed my enclosed car trailer a couple of times using the 4-wire set up and it is not a lot of fun getting everything slowed down without trailer brakes.
- Newest Post: July 18, 2012 09:55 AM
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You need a trailer brake control box, that wire will hook to it. The control box reads the brake switch signal and allows you to adjust the trailer brakes for optimal stopping.
http://www.campingworld.com/category/braking-controls/234&affiliateid=3183?gclid=CLC71vqHk7ECFccBRQodQAWwhA
http://auto.howstuffworks.com/auto-parts/towing/equipment/protective-towing/brake-controllers.htm
36 is right on the money. you need a controller or you will have no brakes loaded or locked up empty. wiring diagram will come with the controller.
X3 -there right on
X3 -there right on
FASTCO44 , ( etrailer.com ) has avery good wiring diagram with colors and connector locations. Check it out.
Sach
Yes, I have a Prodigy RF brake contoller on the trailer. This allows me to hook up to any vehicle with 7-pin connector and a 12 volt power plug in. Modern trucks have a blue wire (electrical brake) in the harness of the 7-pin connector from the factory. It is this wire that the brake controller ties into. Obviously my '56 doesn't have this blue wire. So I guess I will need to find a wiring diagram for newer truck and trace back from the 7-pin connector to see where it is connected. I assume that blue wire is a 12 volt supply for the magnetic brakes which is turned on by the controller.
Link to my RF brake controller: http://www.tekonsha.com/content/products.aspx?lvl=2&parentid=1400&catID=1435%20&part=0
Bob
The blue wire hooks into your brake light circuit. When you press the brake it actuates the trailer brake controller, and the longer you're on the brake the more current is applied (at least on mine).
Bob......run a dedicated #12 AWG ground wire from battery to female plug.
If you have a circa 1995 & newer tow vehicle, you might need a tail light splitter.
The male pigtail from the trailer, when you plug it in, wrap a piece of wire around it...........seems it will fall out no matter how tight it fits. Then the connector gets devoured by the highway.
without a brake controller on the truck you will have miserable trailer brakes. either locked up and sliding when empty or no brakes loaded.