Hi, thanks for replying to my last question, I did reply myself but it didn't get to the forum for some reason. Anyway my bike is a 1979 model, the item that sits behind the battery box and in front of the rear mudguard has the letters OKI written on it, as I said before it appears to have a black substance coming from it, also I don't know what this thing is, I am sure its to do with the spark. it looks like a single unit with two wires coming from it. any info would be great. Thanks.
When I got my '79 CB750L, both spark units had melted the 'black goo', but they still worked fine. The 'goo' is just a potting compound to seal the components, so I mixed up some black epoxy and poured that in each one til it levelled out and they are still working 8 years later!
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