Thank you very much for the info. Basically I'm trying to figure out if the wires should make the tester light or not. Secondly, how can the other side of wire frame light the tester and not have the wires do it. Anyway, I went and ordered one of those dopey little heaters that sits under the back window and connects to the cigar lighter. At least now I'll be able to see who's tailgating me because my 240D isn't moving fast enough.
thanks again...