Im not sure about under the hood, but under driverside dash there is a black box with wire cluster in it. One of the plugs is empty and it has switched power, constant, and a ground. I ran my wire from the relay into the cab and used those wires to power the illuminated rocker switch. I bought a wired plug from a member on here. All I had to do is plug it in and wire the switch to it. I will see if I can find his contact info or you could order the parts and make one yourself. I chose to take the easy way out,lol. I will go out in a few and get a picture of the panel under dash so you can see what Im talking about.