Sure, every thing works the same, you just use the stock wiring to trigger the relay.

 

DSY,
I a little slow on this one:confused: Are you usin a jumper from the stock harness to the battery?? Mike

 

The relay carries the current going to the lights. So use the wires that were powering your old lights to pull the contactor in on the relay. The relay can handle the increased current. It works like the contactor on an AC condenser. Your low voltage thermostat closes a circut that pulls the contactors down controlling a 240v circut. Make sense?

So relay connects to battery. Existing harness connects to relay on low load side. Your existing switch powers the relay allowing current to flow from the batttery to you new, higher power lights.

 

I understand the concept Ge99ne.. i gues what i dont get is..Do i need to by a new relay or use the exsiting one..if so where is it... or what kind do i buy.
thanks Mike