im gonna use a toggle switch to turn the coil on...should i use a inline fuse? or just wire straight from batter to switch and from switch to coil?

 

A little more info on what you're trying to accomplish would be helpful.

 

well i took out all my TPI wiring harness and going with a Carb motor.using a HEI distributor u only need that one wire to turn on the coil. and id rather just use a hidden toggle switch to turn it on instead of hunting the ignition wire that goes from the key to the coil. so basically im just wantin to use a toggle switch to turn on a HEI coil..what gauge wire should i use and what amp switch and use a fuse or not?

 

Just use the wire that supplied power to the stock HEI.

 

it didnt come with HEI stock..it had the TPI motor in it its a 1989 IRoc z 350

 

Yes, and that engine came with an HEI distributor. Every Chevy V8 with a distributor from 1975 had an HEI distributor.

 

isnt HEI wtih coil on top....cuz my coil was not on top it was to the side of the distributor on a bracket mounted to the intake....would there be anyway i could use that distributor without the computer

 

No, HEI is just a marketing name for all GM's electronic ignition distributors, which came in a variety of shapes and styles.

You can't use the original computer controlled distributor with a non-computer carb, but you can reuse some of the wiring. You don't need to take out the whole harness.

 

oh alright thank you tho..il try to find the ignition wire....my STARTER solinoid wire from the Key still works....but if i cant find the original ignition wire..what should i use then

 

You'll find it. If not, you could find it under the dash on the other side of the firewall.

 

alrihgt thanks..il have to use my haynes manual and see what color the wire is