Community Forums

wallace28 · 05-28-2011, 09:18 PM

Hi,

Hopefully someone can help. We have recently purchased a 2003 Fleetwood Revolution 40C and have purchased a new 18 ft car trailer to tow our van around. I picked up the new trailer with my pick up (which has a brake controller) and towed the trailer back home with no problems. But when I connecetd the trailer to the back of our revolution I pulled forward and my wife stopped me saying the trailer wheels were locked up! I had connected the electrical plug into the Rv and all the lights were working etc. The plug attached to the RV looks exactly the same as the one on my truck! I re connected the trailer back onto the truck and the wheels moved freely? So why do the wheels on the trailer lock up when connected to the RV? Are the wires likely to be connected differently on the RV? I do not think that the RV has a brake controller fitted (well I cannot see one anywhere in the veh). When I pulled forward with the trailer brakes locked up I may have been resting my foot lightly on the RV brakes.
Any help and advise would be much appreciated.
Thanks

RVhauler · 05-28-2011, 09:39 PM

Have you checked the brake voltage at the connetor pin without any brakes on MH be applied. Appears to me that you have full voltage applied to the brakes. Any possiblity that the MH is hot all the time?

Mike Canter · 05-29-2011, 05:24 AM

You can't tow a trailer with brakes unless you have a brake controller installed. It appears that the plug on the RV has a 12 v running to pin 2, the blue wire, of the 7 pin trailer plug. The brake controller is what will modulate the 12 volts to the trailer brakes. There is a standard wiring configuration for all trailer plugs but since there is no brake controller in your MH there is no telling what is on pin 2.

Trailer Wiring Diagrams | etrailer.com

Gary RVRoamer · 05-29-2011, 07:08 AM

I agree with Mike - you have a constant 12v on the blue wire, pin #2. If no controller is wired, it may be that the blue wire is straight through from the brakes, i.e. it gets the full 12v whenever the peddle is pushed, even slightly.

In any case, you cannot make any conclusions about braking until you add a controller.