12v switched power source for msd

[msuforeman]

And yes I have searched till I'm blue in the face. I've got a 74 bronco and I'm trying to hook up the msd box, blaster coil and dizzy. The only thing I have a question about is -----What color wire coming out of the firewall (on pass side) is a 12v switched power source?

Thanks in Advance,
Brian

Here are a couple of pics--It looks pretty ratty but after I wire loom everything it will be fine.

 

[70_Steve]

The Green with a Red stripe. It's wire #904, and should go to the voltage regulator. Check out N8's Site for a complete wiring diagram.

 

[msuforeman]

Now that's what I'm talking about--Thank You, Thank You, Thank You!!

Brian