AFtermarket Tach

[blindeyed]

I'm guessing (its hard to tell from the pic) that post on top of the coil is the positive terminal. It looks like the negative end of the coil is grounded next to that white box you mentioned. You want to hook up your Blue? (usually green) wire to the negative end of the coil, first picture.. bottom left circle.

Looks like you might have your ground wire hooked up on the right side of that white box. I would suggest moving it to a different location a bit further away. You might get an improper reading having your ground and signal wire that close together.

Tach looks good though man

[Ram50Man]

I'm guessing (its hard to tell from the pic) that post on top of the coil is the positive terminal. It looks like the negative end of the coil is grounded next to that white box you mentioned. You want to hook up your Blue? (usually green) wire to the negative end of the coil, first picture.. bottom left circle.

Looks like you might have your ground wire hooked up on the right side of that white box. I would suggest moving it to a different location a bit further away. You might get an improper reading having your ground and signal wire that close together.

Tach looks good though man

The blue wire you see in the pick actually is one of the Distributor wires, but i have the Tach hooked up to the same post as that blue one. There is only the one post on the coil itself. then the 2 on the white block. But nothing is labled "+" or "-" And I dont trust the boot colors. Here is another pic with more notes maybe this one will help a bit more....