*UPDATE*
Got the new unit in yesterday and got it installed. unit works as advertised! definitely got a bad unit from the last guy i bought it from. i can definitely tell a difference from the build quality. the unit is heavier, the wire loom looks cleaner and the switches actually make a click when you turn them. and the knobs on the new unit ARE connected to black switches.
i wired it the way the directions tell you to for an 89+ 7mgte and it did not work. I ended up having to wire it up the way the 3sgte says to do it. RED is the way that didn't work and GREEN is how I have it wired on the below instructions:
current working setup is as follows:
Red wire - +B (black w/red stripe wire on ECU connector)
Black wire - Ground (anywhere to the chassis)
Yellow wire - IGF (Turquoise w/black stripe wire on ECU connector)
Green wire - NE (Blue wire on ECU connector)
White wire - E-Brake (white wire coming from E-Brake light switch)
I'd imagine it would go the same way for the 87-88 ECU just make sure you're tapping into the ignition and RPM signal wires (IGF and NE) respectively. 89+ 7MGTE guys, here is the way you wire this thing up! i hope this helps and works for anyone else who is trying to do this.