How to hook up HEI
 

Hey I put in a msd box and the fried. So how do I hook it back up the stock way? Little help here
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Re: How to hook up HEI
 

Re: How to hook up HEI
 

yea i want to get rid of the msd box. we already know its bad.

Re: How to hook up HEI
 

yeah i read where you said it was fried. i just thought that would be a good place to start since they made the thing. could be some additional timing settings, and so forth that need to be considered. here's something else i found off that same website.

http://www.msdignition.com/uploadedF...structions.pdf

Re: How to hook up HEI
 

Yea we where doing the tests yesterday. Came up with nothing. I just need to know how to wire up the stock hei. What do I plug into the B- and c+ plugs and all of that
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Re: How to hook up HEI
 

just reverse process

Re: How to hook up HEI
 

All it needs is the BATT wire hooked up, no?

Re: How to hook up HEI
 

One is for ignition and the other goes to the tach if equipped.

Re: How to hook up HEI
 

thats it? just a 12volt hook up ? where it says batt? what about the c/ground/b hook ups in the back?



and the 2 wire pig tail coming from the bottom of the dist

Re: How to hook up HEI
 

There should be 3 wires (some have 4) coming from the base of the HEI that plugs into the cap. The most outward connectors on the cap are for ignition and the tach.

Re: How to hook up HEI
 

the top
http://i995.photobucket.com/albums/a...9/9d9f6267.jpg


bottom has 2 coming out
http://i995.photobucket.com/albums/a...9/ddb3bf10.jpg

Re: How to hook up HEI
 

That distributor was converted. I bet theres no module at all. Those wires coming out are for the magnetic pickup to trigger the msd box. I doubt theres a module inside that distributor. Thats not the normal way to hook up an msd box. Someone went way too far for no reason and it probably has something to do with you cooking the box.

Re: How to hook up HEI
 

2 common problems i see with HEI's

the groud under the coil and make sure the engine has a good ground

Re: How to hook up HEI
 

I tend to agree.


3r!c84..............Do you have access to an honest to goodness STOCK HEI?

Re: How to hook up HEI
 

no i dont. i bet i can hit the junkyard and pull one. or pull parts from one. what do i need to convert this back? or whatever

Re: How to hook up HEI
 

I don't remember if you can just drop in a module with those. I can't remember what the inside looks like.

Re: How to hook up HEI
 

A replacement module from a parts store wouldn't contain the factory harness (the one that plugs between the module and the cap).

Check out this harness/module package from Speedway: clicky.

I would replace the coil & cap as well.

Re: How to hook up HEI
 

Thanks for the link, that's what I couldn't remember, the "pickup" and plug configuration.

.....and BTW, stock modules are cheap, buy an extra one and throw it in the glove box. While on the side of the road on wet rainy night you'll be glad you have a spare. Plus, having a spare keeps the one in the HEI from retiring early. LOL.

Re: How to hook up HEI
 

sweet thankyou i will get one of them this weekend. and the coil is new i just got it 2 days ago cus i thought it a bad coil. when it was only the box i fucd up

Re: How to hook up HEI
 

I agree. also
this link shows how to set it up and may be reverse the process


http://www.msdignition.com/uploadedF...structions.pdf

Re: How to hook up HEI
 

Do you not take the module out with an msd box? I don't know anything about them but am picking one up this weekend

Re: How to hook up HEI
 

you can just leave it there unhooked. use the existing mag pickup to trigger the box its simple.msd also sells an adapter harness

Re: How to hook up HEI
 

Got a link to this adaptor ?
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Re: How to hook up HEI
 

You have it already. Thats the two wires hanging out of the distributor. It plugs into the plug for the magnetic pickup under the cap that used to plug into the hei module then plugs into the two wire trigger plug on the msd box. If you cooked the msd box theres a good chance you have another issue in the truck. They are very stable when the rest of the wiring is correct. The box should always be unplugged when charging the battery or every hooking up battery cable. They need a good ground as well.

Re: How to hook up HEI
 

whats a better box msd 6al or crane 6000-6440 ?