Question about Cars & Trucks
If the trailer has electric brakes that are powered by a separate battery, you use a 4-pole to 5-pole adapter and connect the extra wire to the truck backup light circuit.
4 pin to 5 pin plug for trailer lights The Hull Truth Boating and Fishing...
Posted on Aug 12, 2017
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Posted on Jan 02, 2017
SOURCE: tow plug
you have one of two things going on first check to see if the brake light on the left side is shorted out, it will be a 1157 bulb replace it and see if it works looking good does not mean it's good if it has a single contact then it's a 1156 bulb, check to make sure where the bulb socket is that the rubber inside the socket is not worn out and the bulb is shorting to ground. if it is buy a 1157 pig tail repair kit at any Nappa auto truck store or any trailer store. replace it if it needs it. Next if that does not fix it pull the left wheel off pull the drum off and look at the wires on the inside, if they are bare inside it's shorting out if you don't see a bare wire look at the color of the two wires and with a ohm meter and one wire disconnected from that side touch them at the plug and to ground one at a time you should have one wire going to ground one not if both wires going to the left side show they are shorted then you need to replace the wire or the electric coil. if you need more help just ask. If I can e-mail you I can send you a diagram and show you how to test if yo don't know. good luck.
Posted on May 29, 2009
I have seen once before that the fuse box was bad on a 2003 Dodge 3500. I had power in and nothing out. We had to replace the box. Not cheap! Hope it is simple like a loose connection though. I think I had to pull the inner fender on the drivers side to access the bottom of the fuse box. Pain in the ****, but...
Posted on Oct 01, 2009
Here is some information that I find useful when wiring trailer connectors, and the brake controller should be wired into the vehicles wiring according to the instructions that came with the brake controller and that identifies each wire from the brake controller.
Be sure that you solder all connections well for the best operation, and you should use 10 or 12 ga. wire for the Pos. (+) connection, and the ground or Neg. (-) connection, and you should run both wires all the way out to the battery, and about one foot from the battery on the Pos. (+) wire to the battery, make sure that you use a 20 or 30 amp Circuit Breaker and Do Not Use A Fuse.
The rest of these diagrams should help you to get your trailer properly wired up.
Posted on May 15, 2010
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