Wow, thanks – I’ll have to check the back of my tach to see if it still has that part attached to allow it to loop in. It should since I had the gauges rebuilt. I know the brass knurled knob is there, I’m just not sure the loop part is underneath. I’ll have to wait until it’s back from the shop to check that out, but that’s another story…

A picture is worth a thousand words, I was trying to figure out how to get that thing attached, and what it attached to. I have the white wire nearby, and it does in fact go to the ignition as advertised.

I’ll keep you guys posted, thanks for the info!