the thing is, there are "Super tachs" and then there are "Super tachs." The first ones had separate senders WHICH WERE NOT ELECTRONIC. These used expensive and now impossible to find mecury batteries and a RELAY to activate the meter. Good luck finding a sender that works
I don't think this is one of those. It does, however, have four wires coming out of it. I figure red one to the + power supply, black one to ground, green one to lights, blue one to coil???
