Yep, had exactly the same problem twice at the same time of year at the same spot!
Coming back from the Dragon rally (2nd week in Feb) I was on the M62 climbing up to the highest part from Manchester direction and the bike started to cut out. I could smell fuel so I knew it was electrical. Pulled over and touched the HT lead whilst cranking, got a nice big shock!
Dried the HT and sprayed with a well known water repellant and she started straight away.
It was the slush and spray from lorries as I was stravelling slowly because of the snow, spray and visability. The slush was melting on the rad and then blowing straight onto the HT lead. That was last year and I have done many thousands of miles since then.
Can you believe that exactly the same thing ocurred this year in pretty much the same spot under the same conditions.
I have a can of the spray readily available a all times.
