Finding The 12V Switched Ignition Wire - Viper 7900 Installation Manual

fuse, of the proper value, regardless of how many accessories are added to the main power feed.

finding the 12V switched ignition wire

The ignition wire is powered when the key is in the run or start position. This is because the ignition wire
powers the ignition system (spark plugs, coil) as well as the fuel delivery system (fuel pump, fuel injection
computer). Accessory wires lose power when the key is in the start position to make more current available
to the starter motor.
12
© 2006 Directed Electronics—all rights reserved