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i bought a tach and it is wired up the right way, i have power and it is grounded. i read that there is a grey wire with a blue stripe on it that i need to connect the green wire to. i looked all over the PCM to find this wire. i can not find it. can somebody anybody help me find this wire???
When I did mine I tapped it behind the gauge cluster. I am sure you can get the signal from the ECU side also.
1. Pull up on the upper dash to unclip it. Move it out of the way
2. Remove the 4 screws holding the cluster in, then pull the cluster out/
3. Pull out the screws holding the 2 pigtails in the dash.
4. Pull them out a little and find your wire.
I am sure someone can chime in with the wire at the ECU. I lost all my manuals and diagrams thanks to a virus.
that helps me a lot, cause i was looking at the PCM for the wire and couldnt find it. my neon doesnt have the stock RPM tach so my buddy got me an aftermarket one. as i said before i have everything hooked up except the green wire.
ok i havent had time to connect the green wire but when i drive the tach stays at zero for maybe 5 mins then it jumps to 2000 and stays there. is it just because i havent hooked it up?