dukeme

Has anybody had this problem?

OK, I just got and hooked up a brand new FORD racing tachometer and yes, I hookd green to MSD AL6 tach input, red to ignition, pos battery, black to neg battery and white to...Well that is another issue. What is happening is when I start the car, the tach jumps and goes back to zero...The dash tack works fine? The white wire is for the light but to what fuse? Is there a diagram of which fuse? I even tryed the green wire to the negitive side of the MSD coil...Same thing. You help would be greatly appreciated.

blkonblk5.0

i dont know about the tach not working try different places hooking the green wire but the white goes to your dimmer switch thats where i put mine.

dukeme

The dimmer switch and where is that located? In the fuse box?
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blkonblk5.0

if that silver mustang is yours than its on the left side of the steering column

dukeme

Yes it is...Is it a big project to wire up?
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blkonblk5.0

no not really just take it out and splice the tach wire with one of the wires in there..thats what i did but i totally forgot which one you gotta guess, lol if thats any help, its not that hard though most of the wires should make it work

dukeme

Completed...However, the tach jumps and goes back to zero when I start it? Light works great...What the F--- am I doing wrong?
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blkonblk5.0

that one i have no idea what is wrong.......mine never did that try to redo all your power wriing n stuff..im glad you got the lightto work though

dukeme

Tach works...Needed to be wired into the fuse box...The thing even dims with the lights...Next Sub Frame connectors.
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