I got this to replace the board that had water damaged. Plugged it in and it all worked like before. I have a rare truck that doesn't have a can bus that is all connected so I had to hardwire everything. These alarms use al-xx70-B board that is programmable to do almost anything 12v you could think up. I have installed this alarm on the worst truck imaginable and I highly recommend Excalibur alarms and remote start it's all very simple now they have it figured out.