Need info on the bare minum wires for duraspark system

[TheRipper]

I tried the search and can not find the actuall info I need or a good link to a diagram.What I have is a 78' bronco with a 351 m in it that my buddy is turning into a buggy.The wireing was trashed when he got it and he ripped it all out before I got to look it over.Basicly I need to know the only wires that are needed to make it run.It has no harness whats so ever.We bought a new coil and still have the factory duraspark box that was on it with the wires hanging out of it.There was another small silver box in the system that had 2 or 3 wires on it also but I have no idea for sure.He has not brought it to the shop yet were I could just dive in.Just figured I would ask about this knowing someone here has the answer..thx for any help or leads to fix my problem...

[Aaron871]

See if this helps

[TheRipper]

I modified the pic to show where my problem is maybe some one will know the answer..thx for the help

[Jrod-13]

yeah, that is a ground, and the dist. probably doesn't have a dedicated ground, it gournd through the other black wire, that goes to ground.

[82F100SWB]

The distributor is the grounding for the entire system. If you are missing the black wire out of the distributor, I believe it would be poissible to just ground the module elsewhere.
Personally, if I was building a buggy, and, I had no harness to work with, I'd use a HEI module to fire the ignition. EXTREMELY simple to wire, just have to get a heatsink for the HEI module.

[ImNotRight]

Huh.. never thought of doing an externally mounting HEI module... HMMMMMMMMM......

[TheRipper]

I have a couple of extra HEI distributors around I will try it when he get's it here next week.Thx everyone for the good ideas and help.

[jeeplvr]

Originally Posted by TheRipper

I modified the pic to show where my problem is maybe some one will know the answer..thx for the help

Hey I made that picture a couple years ago. That sumbitch is making it way around the net. I've seen it in a lot of different places.

Both of those grounds are there to remind you to make sure you have good grounds in those two locations. If you have a gasket under your distributor, you may need a better ground.
If your distributor has a good ground, the black wire to the module will ground through the distributor.
By the way that picture is modeled somewhat after a 1979 CJ wiring diagram, hence the "F" splice.

[TheRipper]

So should I not put the F splice in.It has nothing right now but the plug with some wires hanging off the distributor and I called him and he said it does have the 3 wires from the distributor.So I geuss We should put a splice in the black wire from the box and ground it also.If I do not get it working I will try the HEI deal the other man mentioned.It looked like a good idea.I figure I could take the heatsink off a old computer processor and put on the HEI module.Good job on the pic this is the second place I got that pic..lol