okay I bought this from overboost.comon there special for 70 bucks, and it said it comes with a universal harness, came with wiring diagrams and such but they barly make any sense to me what so ever, I really don't wanna pay another 27 bucks to get the wiring harnes for my car and wait another week to get it. My main question is do I connect anything to key switch connector, or will I just connect the 12 volt const, 12 volt igni, ground, and rpm switch to the ECU wiring harness? also where is the parking brake wire?

these instructions are pretty vague, it also says something about the cruz controll harness....

 

well I guess I'm gonna buy that damn harness from mazdatrix if no one knows....

 

Heh..I bought the harness, it took 30 seconds to snap in. If I had bought the tt now I'd feel comfortable soldering stuff, but at the time I was a total newbie.

 

Black, buy the trust harness from mazdatrix. The HKS one is like 24$ or w/e, the trust is like 7$. Both are exactly the same. Im using the trust (greddy) with my hks timer. But if you dont want it, splice into the ignition and rpm wire to the ecu. The ebrake wire comes off the right side of the ebrake handle (use the proper connectors when splicing!). You have to remove that arm rest assembly to get to it (like 4 screws).

 

so I don't have to mess with that key switch connector?