just did auto to manual swap, and i had a 98 ecu in my 00 ek ex, so my tach wasnt working, so i bought a 97 integra cluster and now everything works still except the tach...any thoughts? right now i have a wire running from the blue wire right off the dizzy to the test wire in the engine bay...so thats where the tach is getting its signal

 

also it might help u to know that when i had my old cluster the rpms would bounce around in the tach when i was accelerating, and the new cluster does the same thing