If you trace back the wiring harness from the starter motor (starter solenoid wire is black with a yellow stripe) and the temp sender wire (yellow with a red stripe) there will be a black with white stripe wire taped into that section of the harness (it should be about the middle before joining the main harness). If it's been cut off, you'll be able to find it by unwrapping the electrical tape and tapping into the existing wire. Sorry about not getting back sooner with the info.