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Headlights activated when bike is off

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#1 Woodsy



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  • Your Ride:2008 Spyder SM5,'77 'wing sport bike,'65 Marusho,Cobra roadster,Cobra Coupe,'32 Deuce Highboy

Posted 05 September 2015 - 02:33 PM

 I have had my 2008 Spyder SM5 for almost 6 years. I have been more than pleased with it's service. However, last night we had a major storm pass through and it brought a lightning storm that created quite a light show. I haven't ridden in in about a week and the keys were in the house. Because of the strong winds, I went around making sure the rain wasn't blowing in. As I checked the window that offers a view of the Syder I noticed the area was lit up. Initially I though someone had arrived but realized that the headlights of the Spyder had come on. Although the rain was  major I decided to go out and turn it on and off hoping to reset whatever had been triggered, by most likely a magnetic impulse from one of the closer lightning strikes. That didn't do anything, I then started it and ran it for a minute and shut it off, while that didn't shut off the headlights the dash lights that had also been on went off. I decided to let it be and see if it would reset on its' own because of the deluge. But after a couple minutes put on some better weather protection I went out and popped the trunk and pulled the headlight relay hoping that would prevent the battery from draining. The headlights, of course, went out but this morning the battery was completely drained. I called the local dealer and they had never heard of such an event and suggested it may have been moisture blown in from the rain. Nothing under the body work was wet though and while I am charging the battery to do some testing I was curious if there had been anyone else with this weirdness. Anyone with a similar experience that may have some insight, I'd like the input. Pretty strange.

#2 DaFox



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  • Your Ride:2012 Spyder RS S

Posted 05 September 2015 - 04:21 PM

Water may have gotten into and shorted the switch on the right handlebar control housing that will "press-and-hold" turn on the headlights.

It's the switch in the control housing on the froward side and can be used to activate the headlights even if the key is not in the ignition.


If a bike cover or tarp is put on the bike, make sure what is used to cinch it doesn't press on that switch, or the battery will be ran down.

Edited by DaFox, 05 September 2015 - 04:24 PM.


Sent via The Great Fox Trail, which is long and twisted, and generally ends where it begins.

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