I really need one cause I'm trying to hook up a Summit shiftlight in my car and I need to know which wire to connect the green wire too. I've already got the red and black hooked up to a power source and a ground respectively, I just need to find a wire too splice the green "rpm sensing" wire to.

So if anyone has a wiring diagram or knows which wire I could connect to, it would be greatly appreciated. I searched all over google and couldn't find anything

 

trial and error...should b able to get it from on of ignition coil wires...which 1 idk

 

I really don't feel like cutting an assload of wires under my dash......that could cause a few problems lol

What about the OBD2 port under the left side of the dash? Do you know if that has a connection to the ignition/rpm? My friend and I can wire up and OBD2 port if it does.

 

i looked it up on alldata and there's nothing in there about it. it just shows the diagram of the panel and says it's linked up to the low speed gmlan.

nothing about actual wires/pins though