Originally Posted by Jimmysjeep
That might be a good idea. Thanks.
actually, it is not a good idea. The stock wiring is not rated for the added load, and will eventually (if not right away) fail
Mount whatever lights you want to use on the trailer, and then run a suitable size positive wire to the front, along with either a new ground wire, or upgrading the existing ground to acomodate the new load on it. The connector can either be replaced with one that has 1 more contact (or more, 2 if you want a seperate ground for the lights), or just keep your existing connecter and add another for the reverse lights (that would be the best way if you use more then 1 vehicle to tow the trailer, or loan it out on occasions...saves on the hassle of hacking connectors togethor)
To run those new lights off of the tow vehicle, run a positive wire from the battery (underhood fuse box is just as good, and usaully easier to connect to), through a circuit breaker or fuse, then through a relay, and then to the back of the vehicle. Use the factory reverse light circuit (or just a rocker switch) to energize the relay. Could also do both. The switch would be handy to have light that isnt blocked by the trailer when setting up camp, or whatever else you may be doing.