Negative out put to Positive Door Locks

drvnbysound, the door lock outputs from your alarm are both positive and negative. The one that shows positive during lock will show negative during unlock and the one that shows negative during lock will show positive during unlock. Adding diodes has in no way converted the polarity of the alarm's outputs. Diodes were only used to block the negative outputs from the alarm to the door lock wires. For alarms that only have negative door lock outputs, relays will be required for vehicles with positive door locks. ~wirewise~