cool stuff,there where 5c and 6c and the 6c is multiple discarge variant,and if i remember it right instructions for both types says to use the 4 prong ballast.none off mine has rpm limiter. 
Quote:If they come in a 4 pin, me too
WOOOW... INTERESTING... NOW I WANT ONE!!!
no only 5 pins,at least those i have are 5 pins. 
BUT,hey hey hey,the one to have is a similar box made by msd for the ramchargers back then.i missed one of those on ebag a couple of months back 
these boxes are cool,there is a bit of reading in the d-c bible about them. 
. I sure woulda thought MSD would have built them for the hi perf 2 terminal ballast systems (4 pin).
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Wow i am awake now, I bought this about 8 years ago with some other parts, NOS still in the box. Have yet to see another till now they are real but 30 years old. the shipping date on my box is oct 13 1980 (3 years before i was born)
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iirc the pentastar plug in must be wired differently as it cannot be plugged in directly from an stock type ECU module over to these MSD's.
Quote:this thread made me recollect a statement from ~20 yrs ago & iirc you cannot take the plug off an ECU & stick it on the MSD directly as the wiring is different & not (directly) compatible (without some wiring changes)& only the plug in (the pentastar shape) is visually identical.
i have the new yearone 70 charger repro harness that has electronic conversion built in with the 5 pin connector set up for 4 pin ballast.i guess any of these this will work right?
Quote:Quote:this thread made me recollect a statement from ~20 yrs ago & iirc you cannot take the plug off an ECU & stick it on the MSD directly as the wiring is different & not (directly) compatible (without some wiring changes)& only the plug in (the pentastar shape) is visually identical.
i have the new yearone 70 charger repro harness that has electronic conversion built in with the 5 pin connector set up for 4 pin ballast.i guess any of these this will work right?
Quote:From what I REMEMBER?? it will plug in identical but the MSD system is wired differently & will not work w a Mopar system AS IS whether your curent system is a 4pin ECU w 2 terminal ballast or a 5 pin ECU w a 4 terminal ballast. It lets you use the same (pentastar)plug in but you have to rewire the setup and you cannot switch back and forth at will which again if I am remembering this correctly means that you cannot stop on the side of the road & switch them then immediately compare the peformance difference which is the feature that I want. MSD does have a Nascar type coil selector and with some DTDT switches you could switch everything over. It'd probably take a fair amt of rewiring but it'd end up being a very nice immediate comparison (especially switching as your going down the road
are you saying my harness will not even plug right to the msd 6al box on ebay and work????
).
there must be a bunch of these still lying around somewhere,i wonder if they made the 7al direct plug in too,he said he is printing out the page from the mp catalog.i am glad to hear its direct plug in.the question now is what to do with my ballast resister wires,hook a 4 pin ballast or connect together,the two tops and the two bottoms or leave empty???????i know that with a msd 6 series cd ignitions you dont need to run a ballast,what do i do?
Quote:FYI I just connected both sides in parallel on a high miles 4 terminal ballast & ended up w 1.1 ohms
the question now is what to do with my ballast resister wires,hook a 4 pin ballast or connect together,the two tops and the two bottoms
wow 7c,that box has the same color and casing as the ramcharger setup,i bet its the same except the r-c had no autotronics sticker(i think)and instead had a mopar part.nr.and again,wow that square rev limiter is cool,i have a few of the cyliner shape ones,is the square type older /made before the cylinder shape models?if you want plug in, the 6c on the bag was 80$ yesterday,no bids.multiple discharge.4prong ballast.i wish i had a gold 7c. 
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The following is from the Ramchargers 1980 catalog...
MSD-5C $49.95
MSD-6C $99.95
MSD-7C $169.95
All have Chrysler pentagon connector, and will take a 4 or 5 pin version. I actually got ahold of a MSD-6C off the internet last year still in the original box. I did make a shock base and installed it in my 70RR, works fine.
Just my $0.01..
so you say they all would work 5-6-7C with only 4pins connected and a 2prong ballast? 
Quote:Quote:
The following is from the Ramchargers 1980 catalog...
MSD-5C $49.95
MSD-6C $99.95
MSD-7C $169.95
All have Chrysler pentagon connector, and will take a 4 or 5 pin version. I actually got ahold of a MSD-6C off the internet last year still in the original box. I did make a shock base and installed it in my 70RR, works fine.
Just my $0.01..
Quote:Quote:
The following is from the Ramchargers 1980 catalog...
MSD-5C $49.95
MSD-6C $99.95
MSD-7C $169.95
All have Chrysler pentagon connector, and will take a 4 or 5 pin version. I actually got ahold of a MSD-6C off the internet last year still in the original box. I did make a shock base and installed it in my 70RR, works fine.
Just my $0.01..
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ok.....msd 5 series and Chrysler ignitions are inductive discharge.
msd 6 7 series are capacitive discharge i think this is true with the old 5c 6c 7c
if you google inductive ignition vs capacitive you will see the pros and cons of each system.go to this interesting article www.chevyhiperformance.com/...inductive...ignitions.../index.html
as far as for the for what i bought,it is msd 5300,which is the msd 5200 5 series high perf inductive.it was called the 5300 cause it was made for chryslers only with the plug.he had it listed as a 6a,he was wrong.i emailed the guy who bought the 6al,and offered him more than double what he paid,i want have and test both systems....now if we can find out they made a 7al with direct plug in that wood be cool,who has the mopar performance catalog from the early to mid 90's .....
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