Well I figured you wouldn't have it, given your ealier described 'hack' job. So hopefully when you buy one it will come with your replacement harness .
It is s simple bypass plug that fits into the alarm connector ; it has a loop to complete the circuit in the absence of an alarm.
http://www.alpineroads.com/t595/datatool/index.htm
If you locate a harness & find it missing, I think I have one (bypass plug) kicking around the tool box.
