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Starter Relay Tue Apr 30, 2024 4:08 am
jjefferies
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On my way across the Bay to visit my friend Greg at his shop riding my Silver '90 K75. While on the San Mateo Bridge I noticed that the turn signals weren't working properly. The right signal wouldn't turn on and the left would only blink once. And the emergency/trouble light switch when turned on would work with both sides blinking. But when it was turned off the left side would continue to blink. Got to the shop and re-tried the turn signals but neither would work. But when I turned the power switch off the engine continued. I tried the power switch and the kill switch. Same response, the engine would keep turning with weird sounds. At this point Greg arrived got out a hex wrench and disconnected the main ground. The one found on the left side above the gear shifter. This stopped the engine. Notably the coolant started overflowing the small tank suggesting an overheating problem. After a few minutes we/he pulled off the side panels, the radiator surround, the master computer (one under the tray) lifted out after disconnecting the handle connector, and pulling the gas tank up a couple of inches. His analysis was that the starter relay had failed with the points probably welded together. He took a starter relay off a parts bike lying nearby and installed it. After re-installing everything and refilling the coolant tank we tested the bike and everything worked as it should. I then scrounged through the trash box and appropriated what looks like a decent rear rack that was being tossed. So with it tied on the back seat I made it back home. Once home I took the old starter relay and cut off the box so I could inspect it. The electrical points were not welded together and I have yet to test it further properly.
So assembled masters of K75/100, I would guess it was the starter relay as replacing it cleared up the problem. But I would like to confirm that so as to insure that I won't have any further problems from this quarter. What should I look for in the exposed starter relay? Or, scarily, are there any other possible explanations of the problems encountered?
Thanks for your consideration
J.
So assembled masters of K75/100, I would guess it was the starter relay as replacing it cleared up the problem. But I would like to confirm that so as to insure that I won't have any further problems from this quarter. What should I look for in the exposed starter relay? Or, scarily, are there any other possible explanations of the problems encountered?
Thanks for your consideration
J.