Its not so complicated, but i havent hook up the O2 sensor on the ECU yet, but all the other features work great
So basicaly you have to plug a wire on the hand brake (GRAY), a ground (BLACK)
If you dont have the harness you will need to plug those 3 directlu: RED (constant 12V+) GREEN (Ignition 1) BLUE (Ignition 2)
I should have remember which colors the 3 wire that i taps myself into were... but as a car audio worker, i know my way around remote starter and alarm so it was easy
if you do plug the O2 (i didnt cause of the lack of info on the ECU, the dealer cannot confirm me which wire is the O2 and i didnt want to mess anything around the ECU) so if you plug it the WHITE wire will be the O2 sensor signal and the Ground (BLACK) should also be plug on the ECU Ground