I'm in the process of installing my Blitz DTT into my DC2 but have come to realize that none of the shops (or even the internet) carry the ignition harness. There are four wires protruding from the unit so I'll be able to just cut some wires and solder them together. However, I have no idea which wire on the TT should mate to the corresponding underdash wire. If anyone has installed one before, please give me some insight . Thanks in advance!