Switched Ignition Wire - Directed Electronics Automate AM5 Installation Manual

➤ 12V switched ignition wire
The ignition wire is powered when the key is in the run or start posi-
tion. This is because the ignition wire powers the ignition system (spark
plugs, coil) and the fuel delivery system (fuel pump, fuel injection com-
puter). Accessory wires lose power when the key is in the start position
to make current avail able to the starter motor.
How to find (+)12V ignition with your multi meter:
1. Set to DCV or DC voltage (12V or 20V is fine).
2. Attach the (-) probe of the meter to chassis ground.
3. Probe the wire you suspect of being the ignition wire. The steering
column harness or ig ni tion switch harness is an excellent place to
find this wire.
4. Turn the ignition key switch to the run position. If your meter reads
(+)12V, go to the next step. If it doesn't, probe another wire.
5. Turn the key to the start po si tion. The meter display should stay
steady, not drop ping by more than a few tenths of a volt. If it
drops zero or close to zero, go back to Step 3. If it stays steady
at (+)12V, you have found an ig ni tion wire.
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