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Showing results for tags 'alarm control unit'.
hi all, first time post here, thanks in advance for any advice, especially loren! i've got a 1996 993tt with interior lights that did not turn on when hood or doors opened. i discovered that my ground wire to the alarm control unit (acu) was bad. so i tried a parallel ground wire from the interior light switch (br/ws wire) to the acu. please note that my alarm arms normally with single flashes when i normally lock the car. also, the door switches and hood microswitches are working in that the door buzzer sounds when i've got the key in ignition and open either door or the hood.