Ok so I'm thinking I don't have to mess with any wires other than the ones coming out of the ECU, is that correct? The 2002 WRX has 122 wires out of the ECU, rough estimate is that less the half are engine related. Are these the only wires that need to be matched up and combined with the RS harness? It seems like their should be more than this as people talk about 12 hours worth of soldering time. So what am i missing?