The sad part is this was sold to me as an ABY harness, so I'm losing money no matter what. Got ripped off :( What are you swapping into? it is a pain in the ass to splice the harnesses but its also a pain in the ass to find an ABY harness . It only takes about 6 connections to the CQ fuse box to get your engine running with an AAN ECU and harness, It can be done for other cars too. Probably a few days of wiring.
It takes a long time to get everything sorted out and figure out what you have. I started from a disadvantage though because I didn't remove the old wiring . So I had to figure out what was and wasn't there.