I've spent Saturday installing my new MSD Pro- Billet distributor for my 92 LT1. Everything went perfectly right up until I tried to plug the darn thing in. The electrical connector at the manifold is totally different from the connector on the MSD. RetroTA pointed me to this thread http://forums.corvetteforum.com/show...ghlight=timing and I thought my problems were solved but it turns out my color coding and pin labeling is different. So does pin A go to pin 1 on the MSD harness I haven't a clue. Also there is an extra wire on my connector that I haven't been able to trace yet It disappears somewhere between the manifold connector and the old opti connector. I don''t want to be wrong and burn up my ignition system. Any input would be appreciated. Thanks.
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I'm going to call MSD in the morning to see if I can get this resolved. Well any way here's what I've done so far. My woes started with a badly leaking water pump.
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This is my opti with the water pump removed.

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Opti cap removed.

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The opti and harmonic balancer removed.

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The MSD installed with the cap off.

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New MSD cap installed.

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Badly corroded opti cap.

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I called MSD and they gave me directions of where each wire went. It is basically Pin A to Pin 1, Pin B to Pin 2 and so forth. The fifth wire is a shielded wire and it's function I'm not sure of so I spliced it together. They told me it was not needed. I didn't want to take a chance. I had to buy a connector, it was a replacement connector for a 93. I bought it at Rock Auto. I don't know if I'm supposed to mention that because they are not a supporting member) and spliced it in accordingly. I got it done on Saturday and it fired right I up. I did not have to adjust the timing or anything it runs perfect in fact a little stronger than before. Maybe I got lucky or something as so many others are having problems. I am by no means an expert, far from it but it may be that the o'ring may be causing the problems.

http://home.comcast.net/~markpoulton/dist.pdf

I could not for the life of me get that o'ring to stay in place with any confidence. So I don't know how right this is or if it will cause me problems later but I used super glue in a number of spots around the sealing area just to hold it in place long enough to get the cap on. It is a bad design. They should have used a machined groove and used a proper sized o'ring to seal the cap instead of having to stretch the o'ring around a shoulder and hope it stays in place. Not smart. Well I hope this helps someone and not lead anyone astray. Like I said I'm no expert.