Gen 3 Coyote-Need help with tach pls (Classic Instruments)!!!

[Tytin150]

Newbie here, first time posting. I'm building a roadster that's in the go cart stage. I need help with my tach, I have tried everything that I know of. Here's my setup, 3rd Gen Coyote, Tremec TKX, Ford Performance Control Pack, Classic Instruments (Auto Cross Series-Gray) I have a MSD 8913 Tach Adapter ( I was told this is what I Needed). I can't get signal, I have tapped into the coil, I have tapped into the purple wire that it tells you to in the manual. ANY help would be very much appreciated!

[michael everson]

Did you follow these instructions on the FFR web site?
https://www.factoryfive.com/wp-conte...ter-rev-1i.pdf
Cut the purple wire in half. the power side goes to red
the other side goes to Red/green
grey wire out to tach signal wire
The tach itself needs to be powered as well.
Did you set the switches on the back of the tach for 8 cylinder?

Mike

[Tytin150]

Hey Mike, I'm thinking I did. Maybe I'm confused on which is the correct purple wire? Any chance you could confirm that for me? Thanks again for your reply.

[michael everson]

Pretty sure it’s the only purple wire in that connector
Mike

[Tytin150]

Thanks Mike, you're a genius, that worked.