For 1990 Civic.. I have an alarm installed but don't know how to hook up for the power door lock.. so i only could arm/disarm and using key to unlock the door. Anyone know how and where do I hook up the wire from the alarm box to the wires on the car and where is this wire in the car ?? on the alarm box it indicates +/- wires to the power lock system (i'm clueless here).. i think it hook up to the power door control unit.. but no clue.. any guidance with pix is greatly appreciated...!!