ravloony

Hi all, I recently came into possession of a 125 SR 1987. The other day the bike was left out in the rain , and now it will not start. As far as I can make out it's some kind of electronic failure, because no lights come on when I turn it on, and the motor tries to run if I push it for long enough. I even ran it down a long hill and let the clutch out and it almost started, but was misfiring a lot and so on, as if there was no spark, only compression. I checked the battery and it seems ok, (but I broke my multimeter, so I can't check again just yet...). Anyway, if anybody has any ideas, please let me know. Cheers, ravloony