hey i got a 2003 cavalier with the 2.2 ecotech motor and i was wondering if anyone knows how to wire the tach b/c it has the coil packs or whatever on top of the head. I dont know which wire to tap in to.

underneth the $432.00 ignition control module you will find 3 prongs. you have to tap into #1 or #3 control tabs

The tach--Its not that bid thing that you put on your dash that looks like a tach that only top fuel dragsters use so they know when to shift? is it? Cops look for thigs like that, they think your trag racing. Not a bige dash Ornament? If you have one, a small one is all that is needed if you do NOT have a tach.