tach is freaking out

Wires are MSD and in good condition. Not that old really as the car didnt see much use after putting them on.

I installed a new electronic ign harness yesterday,but it was acting weird prior to that.

Will double check the ground. Been going through them all one at a time.

Ballast is 1/4 ohm msd and ecu is fbo,as is the coil.Plugs are Bosch irridium.

Nice,reliable ign for the street.

I'll check the voltage and ground,get back to you tommorow.