calterm igniton lock

The third is for accy. You would basically wire this up just like a remote start. I put one of these on an old chevy work van a while back like a 78 or 79 with the ign switch in the dash. I just replaced the factory switch with this one. Just get some ring terminals and connect the appropriate wire to the corresponding terminals on the switch(12v to batt, ign to ign, starter to starter, accy to accy) If you have more than one ign wire, just use a relay.