Installation guide

this wire. Remember you do not need to interrupt the starter at the same point you test it. Hiding your

optional starter kill relay and connections is always recommended.

4. Turn the ignition key switch to the start position. Make sure the car is not in gear! If your meter reads

(+)12V, go to the next step. If it doesn’t, probe another wire.

5. Cut the wire you suspect of being the starter wire.

6. Attempt to start the car. If the starter engages, reconnect it and go back to Step 3. If the starter does

not turn over, you have the right wire.

finding the accessory wire

An accessory wire will show +12V when the key is in the accessory and run positions. It will not show

+12V during the cranking cycle. There will often be more than one accessory wire in the ignition harness. The

correct accessory wire will power the vehicle's climate control system. Some vehicles may have separate wires

for the blower motor and the air conditioning compressor. In such cases, it will be necessary to add a relay to

power the second accessory wire.

finding the tachometer wire

To test for a tachometer wire, a multimeter capable of testing AC voltage must be used. The tachometer

wire will show between 1V and 6V AC. In multi-coil ignition systems, the system can learn individual coil

wires. Individual coil wires in a multi-coil ignition system will register lower amounts of AC voltage. Also,

if necessary, the system can use a fuel injector control wire for engine speed sensing. Common locations

for a tachometer wire are the ignition coil itself, the back of the gauges, engine computers, and automatic