Tachometer Wiring System. | ClubIntegra - Acura Jul 08, 20092nd Generation Acura Integra (1990-1993) Tachometer Wiring System. Thread starter gotgohan which blue wire is that? the one from the dizzy or the one from the tach? because the green wire from the tach goes to that blue wire from the dizzy. gotgohan Apprentice Mechanic. Jul 8, 2009help with external Tachometer | ClubIntegraMar 28, 2011Tachometer Wiring System. | Page 2 | ClubIntegraJul 12, 2009See more results 1998 Acura integra tachometer stopped working Replied by Trcustoms719 on topic 1998 Acura integra tachometer stopped working If there is a wire that is not hooked to anything going to the tach that would be the first thing I would look into. You really need a diagram like dreamer said.