How can you think you are doing anything but hijacking the op thread?please start your own thread. If the op comes back the discussion here could get very confusing which is the reason for no high jacking rule.[
http://www.thegsresources.com/_forum/showpost.php?p=2072255&postcount=1QUOTE=volvo64;2077596]I don't want to hijack this thread exactly but I think I'm having a very similar problem. I have the exact same bike- 1985 GS550L. Have had it since May 2012. Electrics/charging have always been a bit wonky. Battery tended to be weak, offered one or two cranks then died if it didn't start (I got very good at push starting the bike).
Some background: In November I garaged the bike; put it on a trickle charger. In December I left the country with my wife, not to return until just now. Between December and March, bike was on trickle charger, but never started. For some reason in March (I believe) the trickle charger was taken off by my brother in law. I asked him to reattach the charger in June and try to start the bike. He attached a
different charger which I now believe doesn't work. He never got the bike started (for the entire 6 months it sat). I came back and tried to start the bike, no juice in the battery. Put the working charger back on the bike, started it an hour later.
Rode for two days, no problems. Was riding down 40 (long, fast road) for about an hour at high speeds, came into town and stopped at some lights. Back up to speed (50+ mph), heard and felt a big bang from the engine. Thought it was a rock hitting the gas tank or the chassis. Bike continued to run fine but pulled over immediately to check for damage. None found.
Tried to restart the bike. Turned the key, got lights. Pushed starter, heard a tick, lights go out. Electrics dead. Turn key off, wait 5 minutes, lights again, starter, tick, electrics dead. Look at battery- it's bulging slightly on one side- probably exploded inside.
So I got it home, removed the battery (carefully!), hooked up a jump starter that we have (no battery in place). Multimeter only reads 6 volts from that, so it's trash. Turn key, multimeter reads 0 volts. Will find a battery today to try.
Question is this- you say check the solenoid for power- my manual doesn't mention a solenoid. Probably different terminology, but can you clarify? This is the manual that I use for my bike:
http://1drv.ms/1wx3CJd
Will investigate more once I find a battery to borrow...