wires from hubs?

[Joe Steadman]

I have an 85 13 foot Scamp... well, it has a few wires coming from the hubs? I assume they are for brakes but it also is wired with a flat four prong harness... can you run brakes with only four wires?

[Roy in TO]

It could be for brakes. Do you have hubs or drums? If drums then you need a 7 pin to get the brakes going.

[Joe Steadman]

Originally Posted by Roy in TO

It could be for brakes. Do you have hubs or drums? If drums then you need a 7 pin to get the brakes going.

I'll have to take a picture... they are pretty big.

[Don N]

It could be done by leaving the flat four pin for the lights, etc but you will have to mount a brake controller in the tow vehicle and could just run the hot wire from that back to a single connector for the trailer brakes. It is not the normal or best way to do it but would work in a pinch. The other wire from the hubs has to be grounded. The 7 pin is the better way to do it.

[Darwin Maring]

to see if they work:

Get a compass and a battery.
Hold the compass close to the hub and have someone connect the wires to a battery. If the magnets in the hub are working, the compass should move.

[Frederick L. Simson]

Originally Posted by Joe Steadman

can you run brakes with only four wires?

Boat trailers have a flat-Five pin connector so that the trailer brakes can be hooked up, in addition to the basic lights. This would be sufficient if you don't want a battery charge line also. For that I'd recommend getting a 7-pin.
Trailer Wiring Diagrams | etrailer.com