Doesn't require a passlock because it's a VATs car til probably 2001 (Regals changed 2001). You may find VATs wiring under the column with a nice connector and or go directly to the bcm pins. I unplugged the connector to the column (vats only, nice huH?) and then tossed the resistor directly onto the bcm wires. Anyone stealing a Buick Regal with an alarm is pretty hard up for transportation...lol