After the testing I've done theres no back light. If you combine the red & yellow wires it reads zero voltage.

Once separated to different inputs it seems to work. I'm pretty sure it'll be ok.

There's no switch on the unit. One unit per battery. See both at the same time. Each powered by the other battery. Too easy.

Harro - I got a power window and fog light control under there. How do you think you'd get behind the panek? If you do it take some photos for me.

Boots - those spottie mounts were perfect. Sorry I couldn't stay, I was still drunk and we had a 12 hour drive in front of us. Your beer will be on its way soon