I have an 84 mustang gt with the whole msd setup installed (msd 6al, msd ready to run Dizzy, msd blaster ss coil) and i used the white wire trigger for my set up and left the magnetic pickup trigger for my kill switch. Everything works fine but my tach still does not work even after i installed the tach adapter (msd 8910) which is used with the white wire but still i cant get it to work. I checked for power to the adapter and its there so my question is what should be my next move as far as getting the tach to work? i dont want to install one of those giant tachs id like to get the factory tach working.
Any input is appreciated thanks guys.