Hey I have my auto tach and i have the tach adaptor if any one eles has done this in a 03 sunfire and could post some pics to show where they mounted it and which wires they taped into for it that would be great i i know where the adaptor all goes but i dont wanna mess with the ignition wires till i find the best one some one told me my stero would be eaisest and the which wire i tap into foe the white wire would the white of my dome light switch work???? pics would be good not of the tach adaptor already seen all thouse for the 02> modles.

k ive decided im going to splice it into my sterio harness i just need two know wich is 12v ignition power and which is the 12v lighting the rest i have figured out.

got it all figured out now i used the 12v ignition from my deck and the illumination and ground all from my deck and it reads good except its out 200RPM which is good ive been told .