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Supras Invade Las Vegas
2,432 Posts
999 times out of 100 a stereo shop will key the aftermarket alarm off the ignition. The factory alarm keys off the ACC.

Rewire your alarm to key off the ACC rather than the IG and then cut the blue wire if you have an HKS TT.

You will have problems with your vibration sensor setting off the alarm while the motor is still running though - you'll have to figure that one out on your own.

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