I need some MSD box advice. Gray tach wire??

[Hotwheelbill]

I am just getting around to hooking up this my 6AL and have no idea where to hook up the gray Tach wire from the box. A little help please?

BTY, I did use the 8877 pig tail. Don't understand why it would not have taken care of this wire too.

 

[TylerZ281500]

what year? just taps into the tach wire on the harness

 

[Hotwheelbill]

1999.
Yes, but where and which wire?

My tach is working without this hooked up. Is this grey tach wire for the Rev Limiter on the MSD Box?

 

[BoxerPitMix]

Pretty sure it's just for the rev limiter. I never hooked it up when I had it on my last truck.

 

[Crash]

No it's just a tach output, you don't use it, per the MSD wiring diagram book I have.

 

[Hotwheelbill]

OK, Thanks for the replys