it is a pain man. US wiring is completely different from JDM, cause the JDM one is auto adjusting. you CANNOT just wire up the JDM one to a US rex and get it to work PROPERLY. i have heard some people getting it wired enough to get heat out of it.

the one autosonic has for sale is just that one piece, with no harnesses or other motors, which will make wiring a bitch.

you need a series of motors, relays and a main "brain" for the auto to work right. I was fortunate enough to find a complete climate control for sale, with all motors, relays, and harnesses, but we are still trying to figure out how to get it integrated into the US wiring system.

hope this helps :thumbup: