So I'm curious to how to wire some lights up to these switches. I got some led glow truck bed lights off of ebay (48 led's). I want to run the the light wires to the cluster of wires under the hood. I had my truck running had all 4 switches on and hooked the lights up to one of the bare wires with no luck, and no reading on my volt meeter. Do I have to run a power wire to the cluster ? The lights on the switches turn on I just assumed they were already hot ?