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3literpwr

01-09-2022 10:53 AM

Tach signal with two MSD boxes

Hello,

I'm in the middle of installing twin MSD boxes on my car. I'm wondering if you only use the grey tach signal wire off ONE of the boxes?

Thanks!

Phrog

01-09-2022 02:54 PM

Yep I used one to drive the Tach and the second box to drive the shift light

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