My GS500et broke down today. I had just filled up with petrol and whilst riding the half mile home it started to misfire. By the time I got back it conked out completely. Now with the exception of the neutral light and the oil pressure light coming on when the key is turned on there are no electrics at all. The lights starter motor horn everything has stopped working. I changed the ignition switch with a spare and the problem is still there. There are no obvious signs of burn or broken wires. Anyone got any ideas? The Bike is old, 26 years old and has done 78,500 miles. No problems whatsoever before this.
Check the auxillary ground. Misfiring is the hint for me here.
Cool.
Buddha.
well, mine is 30 years old, and there has been few electrical problems, fortunately this age electrical harness is easy to navigate the problem, all you need is a multimeter, the electric diagram will help alot too. Last problem i had was rear light didnt turn on, except with straight 12volts, 15mins with multimeter and el. diagram i found the problem leading to key switch, knowing those are expensive i just jumped the rear light wire to another continuous 12v from the keyswitch..
At the time when i hassled with all the wires front end i found several corroded connectors, one connector were actually smelting at the moment! which weren't related to the problem i had in the meantime.. which leads to question, have you checked the connectors thoroughly?
At these age theres oxidation forming on copper.. IMO kinda weird that lights etc. out AND starter. Hows the battery? Could be that battery's out but still some juice to electrify small bulbs on dash. Hope you sort this out
Quote from: The Buddha on June 12, 2022, 11:34:35 AM
Check the auxillary ground. Misfiring is the hint for me here.
Cool.
Buddha.
Well done Buddha, it seems you were right. Broken wire into the block connector. All fixed now and running fine with all electrics working as they should.
Quote from: Bo72 on June 13, 2022, 02:14:28 AM
Quote from: The Buddha on June 12, 2022, 11:34:35 AM
Check the auxillary ground. Misfiring is the hint for me here.
Cool.
Buddha.
Well done Buddha, it seems you were right. Broken wire into the block connector. All fixed now and running fine with all electrics working as they should.
Yeaaaayyyy Me - Nooo that aux ground is the classic rando misfire miscreant. Sometimes left will drop, sometimes right will drop, no real pattern and what a dumb design. Almost on par with the clutch push rod running left to right across the motor.
Cool.
Buddha.