just hook them up to your dome light.
you are going to have to go through your roof line to find the wire that you need to split.
once you found it, just split the wire from there and you should be fine.
if possible, split your wires AFTER the switch, that way you won't have to add another one to turn off the lights.
NOTE....i'm not sure how true this is, but I have heard that you shouldn't flash your neons on and off so many times.
It's safer to leave them on for a constant amount of time and not flash them.
I know they are not blub and will not burn out, but you could burn out the power supply.
Double check on me with that though to make sure.
