1986 Ford F250 302 EFI Delete

[viven44]

Yep that correct, but the Ballast is not needed if the coil you are using doesn't need one.

The truck I had actually came with a GM HEI distributor/coil setup that didn't need ballast. The wiring was a bit easier and the ignition modules were more readily available, cheaper. If its not Ford Wiring anyway, then why not try something else.  It was a Franken-Truck.

Check out pg. 43 here for more info on Coil wiring.
https://www.painlessperformance.com/Manuals/10102.pdf

This even has wiring diagrams for 1G/2G/3G alternators.

[ArdWrknTrk]

Those GM modules in an HEI suck up enough power that the coil is never going to saturate.

Get one for a Tornado and you can set it up to have ignition retard while cranking..... 💡

[Phillip G.]

I've seen that a lot over the years and it does work great. I think I'm going to take the ignition module and coil harness out of the '82 F250 along with a new square coil that you suggested and see what happens.

I did finally find the original engine side distributor plug in that mess. The former owner didn't have it running through an ignition module in this '86 302. Matter of fact, there was no ignition module in the truck when I got it Jim. Lol

[ArdWrknTrk]

The square coil is for EFI where it receives full power all the time.
If you're going to run a DS-II module you should probably use the horseshoe connector and the cylindrical coil. (It's all part of a 'system'

[Phillip G.]

Oh, that's right. You did tell me that coil can be full power. I take it the '82 trucks were DS II cylinder coils?

[ArdWrknTrk]

Some time during the 85 MY 302's became 5.0l EFI.
Then they got the square coil.
300's were next.
The 460 & 351HO continued DS-II & carbs into 1987.

[Phillip G.]

I've just saved that information Jim. Thank you!

[ArdWrknTrk]

If there's some way I can help, I'm more than glad!  🙂

If you need documentation let me know, I'll find it..

[Phillip G.]

Thank you, Jim! I will do that! Here's the '82 setup I have.

[Phillip G.]

Another view of the '86 wiring hack.

[ArdWrknTrk]

I definitely think the PO had a serious mental health issue.  

[Phillip G.]

Odd that you say that because, you are not wrong.

[ArdWrknTrk]

May, or may not be meth..but that harness closely resembles their neural ganglia.

[viven44]