I don't think I have read anything about what I am trying to do on here, so I decided to start a new thread. I just about have my dual battery setup in. I am getting ready to wire the switches for all of my accessories, and I would like to run them all off the second battery. However, I would like some of the LED lights within the switches and my voltmeter to be energized only when the key is on (Obviously tied to primary battery). I am thinking there should be some sort of relay I can install to accomplish this - once energized by the key on wire from the primary wiring system, it allows current to flow to the accessories from the second battery. This seems simple enough, but I m having trouble finding something that says it will do this. Since this is such a simple undertaking, I am sure it is out there, and I just don't know the proper thing to be looking for. Any advice?