Great call, Chuck! This shows how helpful these boards are, especially this one with all the knowledgeable help. Sorry about the lack of support here, GDJ, but I wouldn't have been any help as I was guessing fuel mixture rather than ignition.

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1983 380SL
1995 C280
1995 S500 coupe
1990 Mazda Miata
2004 Suzuki Hayabusa