1 Eerie Electrical Gremlin 1988 k100 LT Wed Apr 20, 2016 12:57 pm
KyleMB
active member
last year i bought this 1988 k100- 140,000 miles. kept up well and in great shape mechanically and otherwise... i started noticing some odd electrical gremlins such as the cooling fan would cycle on/off with the blinkers! i would randomly lose power around 3,500 RPM? (can't remember exact RPM) until i restarted the bike... of course i checked my connections, grounds, used some electrical lube etc...
last july i had a totaly melt down. on the interstate my tachometer stopped working and i had a battery light on. i tried restarting the bike on the fly and it wouldn't start... eventually i had to push the bike off and thats when smoke poured out from my right handlebar and under the gas tank. quickly shutting off the bike & towing it home i disassembled what was now a worthless piece of crap wiring harness that was totally fried.
after some intense googling and research i tracked down a gentleman and commissioned him to build a new loom for the bike. having replaced the wiring harness with this new one TODAY THE BIKE STARTED UP AND IT SOUNDS AMAZING. Here is a link if you'd like to hear it:
https://goo.gl/photos/2wV5LxRqN1NvUboy5
unfortunately i found some gremlins!
everything checked out except the blinkers, the hazard lights, and low beam would not work. i let the bike idle until the fan came on and then i tried toggling the high / low beam and i noticed the high beam was causing the fan to come on! toggle to low and the fan would turn off, toggle to high beam and the fan is back on!
what the hell is going on with this fan gremlin? all the electricals have been replaces: the entire harness, the fuse box and everything inside, the switches, etc!
i need some k100 guru support so i can get this thing back on the road before i miss this summer too!
thanks in advance.
-K
last july i had a totaly melt down. on the interstate my tachometer stopped working and i had a battery light on. i tried restarting the bike on the fly and it wouldn't start... eventually i had to push the bike off and thats when smoke poured out from my right handlebar and under the gas tank. quickly shutting off the bike & towing it home i disassembled what was now a worthless piece of crap wiring harness that was totally fried.
after some intense googling and research i tracked down a gentleman and commissioned him to build a new loom for the bike. having replaced the wiring harness with this new one TODAY THE BIKE STARTED UP AND IT SOUNDS AMAZING. Here is a link if you'd like to hear it:
https://goo.gl/photos/2wV5LxRqN1NvUboy5
unfortunately i found some gremlins!
everything checked out except the blinkers, the hazard lights, and low beam would not work. i let the bike idle until the fan came on and then i tried toggling the high / low beam and i noticed the high beam was causing the fan to come on! toggle to low and the fan would turn off, toggle to high beam and the fan is back on!
what the hell is going on with this fan gremlin? all the electricals have been replaces: the entire harness, the fuse box and everything inside, the switches, etc!
i need some k100 guru support so i can get this thing back on the road before i miss this summer too!
thanks in advance.
-K
Last edited by KyleMB on Wed Apr 20, 2016 3:25 pm; edited 1 time in total