Where to hook tach wire? 93 Chevy

Hey guys, I have a 93 Chevy TBI automatic and I just bought an Autometer tach for it. I need to know where to put the wire that runs from it for the actual RPMs. It says on a coil and something about HEI. I do not have a factory tach and it says something about a tach wire on the computer too. Thanks in advance, you guys are great!

1993 Chevy Silverado... 4x4, 350 TBI, K&N XStream, Bosch +4s, MSD, BFGs, 3" Flowmasters, and a poor kid working at an autoparts store.

[Drey]

No idea but while were on the subject if i get a Tach for my 83 GMC (which doesnt have one) would i have to get one acording to engine, and where would i hook it up at?

CHEVROLET/GMC RULES
i know cuz i have both!

It goes on the coil,I think you unplug one wire then plug the tach wire to the coil and the one you unplugged on to it!?

[Yukon97]

The coil sounds about right. I would just try that first.

no you dont have to unhook anything. theres just an extra wire on top of the coil with a connector on it already. plug the tach hookup into it, then ground and one to dimmer and youre set

Mike ~

89 K1500, some goodies but not enough [img]/wwwthreads_images/icons/tongue.gif[/img]