trailer wiring

[Blue Ox1]

This may sound like a dumb question but my TT I just bought,has a 12volt wire on the trailer plug that stay's hot all the time and the terminal on the plug is the one that is suppose to be for the battery charge on the trailer. Because when I plug my trailer connector in the running and tail lights come on even when I don't have the trucks headlights on ,it doesn't seem right to me but thought I would ask?The only thing I would think it could be for is a electric toungue jack

Joe

 

[RMachida]

Tail and running lights on the truck or the TT? The terminal on the plug for battery charging should have 12v on since it is connected directly to the TT battery. If the lights on the truck some on, the trailer connector is mis-wired.

 

[klenger]

It sounds like the trailer plug is mis-wired. See http://www.klenger.net/dodge/7-pin-connector-installation/index.html for a diagram of the 7-pin RV connector.



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[Blue Ox1]

The runningand tail lights on the travel trailer all come on.

Joe

 

[RMachida]

The runningand tail lights on the travel trailer all come on.

Joe

Sounds like maybe tail/running and battery charge are reversed on the trailer connector (this is assuming that the truck connector is wired properly. This would provide battery voltage to the tail light. Another possibility is the connector is completely miswired (mirror image) in which case applying the brakes would blow a fuse in your truck if the trailer was hitched up.



Just a thought...

 

[Blue Ox1]

I disconnected the wire coming from the trailer battery and to the splice leading back to the power center and the running lights don't come on now and everything works,I just to have to jumper from the wire from the trailer connector wire to the battery for the battery charge,everything seems to be working normal so I'm gonna leave it at that.

Joe

 

[klenger]

Did you check to see if the safety brake cable might have pulled out of the switch on the trailer. If it was pulled, that might apply constant 12 volts to the brake lights, and possibly the running lights. Just a thought.

 

[Blue Ox1]

I'll check that forgot about the safety switch.

Joe