Need some ideas...the warning lights on my tach will all come on and the needle will flutter a little bit but never register any rpm...everything else on the sled works, runs great...i have searched the forum and tried everything that i found, replaced the relay, checked the connection to the tach and to the ecm..no corrosion or broken pins...also as im revving it up and down the tach lights will go on and off...anyone else had this sort of problem...could it possibly be the tach...im doubting it...it sounds like a wiring issue somewhere anyone know where to start??
