Distributor wires-pos/neg UPDATED

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Maybe you can tell from the original plug? I believe the white/ red units, the white connects to the distributor male prong on the original plug.

Neither of the two wires is ground. The output of the dist. is an AC pulse. Because it goes both positive and negative, the polarity will affect timing (phasing) at the dist, so I'd assume that polarity is important.

Even though you probably know the phasing discussion turned into a huge fiasco, I'd bet that changing the polarity of those wires WILL change dist. phase by a large amount.

I would not cut off the original plug. those two prong plugs should be available easily at most any NAPA or other parts store, probably sold in pairs.

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call 'em...they've helped me. good luck!

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I think that's what I'm gonna have to do. the problem I'm running into is the wire diagram that MSD provides, shows a black and orange wire from the factory distributor. the buchillion pictured above shows black and red. the distributor that I have is black and grey. it's probably a safe bet that in this case, black = black, and orange/red = grey...but then again...


another similar question, since I'm new to MSD ignitions...where do I put the magical "rev limiter chip"? I don't see anywhere to plug one in, and no where in the diagrams or literature does it say how or where to install the rev limiter chip.

not that I absolutely need one, but might as well put one in for insurance. my dyno graph shows that I have no reason to spin this motor faster than 6200 rpm so I might as well toss in a 6200 chip incase I miss a shift or get stupid with it.

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6A no rev control

6AL has the spot for rev chip

http://www.msdignition.com/info.aspx?taxid=4&taxid2=94

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So, here are my options!

MSD wires soldered to plug from orange box plugged into stock distributor
Green soldered to Grey w/Black tracer plugs into Black
Purple soldered to Brown w/ white tracer plugs into Grey


OR

Purple soldered to Grey w/Black tracer plugs into Black
Green solderd to Brown w/ white tracer plugs into Grey

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So, here are my options!

MSD wires soldered to plug from orange box plugged into stock distributor
Green soldered to Grey w/Black tracer plugs into Black
Purple soldered to Brown w/ white tracer plugs into Grey


OR

Purple soldered to Grey w/Black tracer plugs into Black
Green solderd to Brown w/ white tracer plugs into Grey

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Like I said, it probably will trigger either way, but will probably affect rotor phasing. All I know to suggest is try it and check it, or call MSD You'd think for the money they charge, they'd specify which.

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I plan on it when I have the opportunity during business hours, and I can look at some things again...looking at a diagram online, it looks like the female side of the plug on the distributor is the negative...the MSD diagram is actually quite helpful, except my distributor wires are black and grey, not black and orange like MSD shows. I assumed the black on my distributor is still the negative and I have a grey for positive instead of red...I just wanted to verify first from someone who might have "been there, done that"

then the comment about the female/male side of the plugs triggered the idea to look at the diagram again, looks as if the female plug on the distributor IS the negative, as this diagram indicates...but, I don't have my distributor infront of me to verify that MY black wire also goes to the female side of the distributor plug.

once I look at it all again and verify a few things, I'll give MSD a call.