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Greddy and Aftermarket alarm diagram

In essence, we are 'breaking' the main ignition feed and allowing the keyswitch to toggle the relay between the turbo timer and keyswitch operation of the ignition.  As you can see from this diagram, when the key is engaged, the relay contacts close allowing battery voltage to flow into the main ignition circuit. When the key is turned off the turbo timer will lose voltage input to its ignition wire. At this time, the timer turns on and applies voltage back to the main ignition feed but not to the alarm ignition feed since it is isolated from via the relay . There are some things to consider: 1) Impact sensor sensitivity make need to be decreased 2) Automatic door-locking (i.e. auto arm and simultaneous lock)  via the alarm may not function correctly and may need to be turned off and 3)A continuous duty-heavy duty relay must be used.