As I'm sure y'all know, there are four wires going into the stock coil. My question is, where do these go into a cylinder-type coil? I've looked at the wiring diagram in my Chilton manual, but it makes no sense to me.
I'm going to the track at 5:30, so I kinda need to hurry.

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White '92 Firebird w/ 305 TBI. Open element w/ non drop base, increased fuel pressure, TBI spacer, Hedman Hedders & y-pipe, no cat, cat-back exhaust

 

btt

 

c'mon, I'm sure someone has done this or at least knows what I'm talking about...

 

I can't answer from first-hand knowledge, but from what I see on later model ignition systems and from what I've gleaned over the years, I believe the answer is - you don't.

 

P.S.: I've had an MSD Blaster 2 coil sitting on my bench in the garage for 2 years for this very reason. Besides the rides in my sig, the other vehicles in the family are: '84 Chevy Van (HEI), and '91 Pontiac Bonneville (crank trigger coil pack).

I basically haven't had anything to put it on since I put the Jacobs on the '57.

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82 Berlinetta, orig V-6 car. Rescued w/86 LG4/TH700R with all harnesses, sensors, ECM, etc. 3.08 open, cat-back from '90 305HO, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress.
57 Bel Air, my 1st car. Currently 396 .030 over, Weiand Action+, Edelbrock 1901 Q-Jet, Jacobs Omnipack, 1-3/4" headers, TH400 w/TCI Sat Night Special conv & shift kit, 3.08 10-bolt, AMSOIL syn lubes bumper-to-bumper. Best 15.1 @ 5800' Bandimere. Daily driver while Camaro was being put together.

 

They may be right, I have a blaster coil installed only cause I have the complete NSD ingnition with a 6AL and all... The coil actually uses only a positive on one side and a negative on the other but I wouldn't know how to with your stock ignition...

 

I answered this a while ago, so here it goes again:

Your dual connector coil is really a single connector coil... inside the coil, all those 4 wires go down to just "two" wires. I'm not sure -why- GM did this, but it appears to be an "easy" way to join a set of wires together.

As you look at the connectors, you'll see something like:

B1 G1
B2 G2

That's "B1" as in "black connector, pin 1", and "G1" as in "gray connector, pin 1".

Notice how I drew that- B1 is across from G1. B2 is across from G2. If I remember correctly, B1 -connects- to G1. B2 -connects- to G2.

I have an Accel remote-mount supercoil on my car. It came with a neat little harness- the dual-connectors plugged into the harness. The harness changed the four wires into -two- wires, one red & one black, which went to my two-wire coil.

MSD sells the same harness, meant for hooking an MSD 6-series box directly into the factory wiring. Of course, the harness is $26. The nice idea about the harness is that if your Blaster coil ever dies, you can un-plug it and plug the GM coil back in... altho I don't see why that'd happen.

So basically what you would do is cut the dual connectors off. You'd connect B1 to G1, and then connect another wire from that junction to your new coil.

The problem here is I cannot remember if B1/G1 is positive, or if B2/G2 is positive for the coil. Hey here's a thought- unless someone beats me to it, during "lunch", I'll look it up in my GM manual. I had to go home anyway

If the coil's wired backwards I don't believe there is a major problem, I think your high-rpm spark just goes away.

-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.v6fbody.com mailbags

 

Thanks Tom, now if only you could tell me which one is neg and which is positive . I knew somehow that they have to go down into 2 wire instead of four, I just didn't know how exactly it works.

 

Tab, here's what you need, I looked it up for you:


Gray connector -to- Black connector -to- Coil
----------------------------------------------------
Pink/Black -to- Pink/Black -to- Positive (+)
Black/White -to- Black -to- Negative (-)

[edit] When you cut off the factory connectors, you might want to leave an inch or two of wire on them, in case you ever want to go back to stock later on. Parts stores sell those connectors but they want about $20 each!

Also, yes, the "A" terminals go to each other, and the "B" terminals go to each other. If you look closely at your stock connectors, you'll see "A" and "B" stamped on each- but the wiring diagram above has the same thing.

Let me know how it goes!!! When I added an Accel Supercoil to my car, it seemed to pull harder in the higher RPM's.

-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.v6fbody.com mailbags


[This message has been edited by TomP (edited July 28, 2000).]