Keystone cougar 30rls wiring?

[Jpegg01]

The underbelly tape came loose and a cable fell to the ground and since it was dragging down the road it ripped up a couple of wires. The cable was maybe a 5 conductor could have been 7 color coded #18 wire. I was trying to determine what the cable is for?

[flybouy]

What color are the wire insulators and where on the trailer was it located besides under.