In the instructions it says hook the switch up to the wire going between the tach and the speed signal from the negative side of the coil or ecm. Me and my dad would rather know which wire it is before we start tearing through ****, plus we don't have a manual for my car yet. I want to finish hooking this up, if anyone can help I would appreciate it this is about all I need to get this finished.

 

pretty sure thats the green one coming from the top of the coil harness. there are only 2 wires, it's one of them.

 

Thanks a lot, you do a badass job helping out people. We all appreciate it.