It only 3 wires.
- 1 wire is ground
- 2 wire is power that goes through a toggle to a relay
- 3 wire that comes from the clucth swich that activates the relay of your choice
its kinda finiky at times. It surges sometimes when its trying to hold the rpm that I set it at. But it works great. I launched it 2-3 times and it peeled the outer layer of tire off....
to set the rpm you:
a) push in the clucth with the toggle on
b) hold the set button on the controller(middle button)
c) rev to rpm of your choice
d) hold it there for 2 seconds and release the set button
e) then hold it at the rpm for anouther 2 seconds before letting off the gas
then it has a + and - for the 10 settings for 2 step aggresiveness!
Ill post a vid soon. I have the one posted on there site currently. The kool thing about it is that you can kit the antilag while driving...