Clinician
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Post by kabooie on May 21, 2012 14:20:33 GMT -6
I have a 2008 UM Matix II scooter. I decided to change the battery and for some unknown laps in memory I hooked the battery up backwards. It blew the fuse, and after talking to my Dad I figured out what I had done. I hooked the battery up correctly and replaced the fuse that is connected to the battery. Now the engine will turn over and I was able to start the scooter, however I have a new problem now. The switch does not seem to be working. I can take the key out completely and the headlight and instrument light stays on. The started does not turn over however when the key is out. Does anyone have any ideas on how I can fix my problem.
Thank you
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Senior Clinician
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Post by gatekeeper on May 21, 2012 16:52:50 GMT -6
I don't know if your scooter has one or not but it sounds like a bad blocking diode. A diode only lets current flow one way. When they go bad they allow current to flow both ways so power gets around the switch to the lights when the key is off.
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Scooter Doc
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Post by sprocket on May 23, 2012 16:38:22 GMT -6
I have never seen a blocking diode in a scooter... i suppose anything is possible...
Are you certain younaten't turning the key to an 'accessory' position in error?
Does it have an alarm system?
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Post by Bashan on May 24, 2012 3:43:23 GMT -6
There's blocking diodes on 250s but generally not 150s. However, newer 150s are getting more sophisticated and a DC CDI system with a diode wouldn't surprise me one bit. That switch does sound like some kind of parking or accessory position. If the bike works fine and locks don't worry about it. You may have just never noticed that it did that...it happens. If it doesn't work fine you may have roasted the switch before the fuse blew. There's ways to check that, let us know. Rich
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Scooter Doc
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Post by sprocket on May 24, 2012 14:52:19 GMT -6
Good to know Rich..so if you hook up a diode backwards it will blow it? I asked about an alarm because they don't like to have the positive and negative reversed...cooks them inside..even just for a second...may be a way to prevent people trying to defeat the alarm system..I don't know...
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Post by Cruiser on May 24, 2012 20:51:35 GMT -6
Hooking up the battery in reverse would not hurt the blocking diode if you had one. I would think that you could have fried the regulator/rectifier. Try pulling the connector on the R/R to see if the lights go out. If they do, then the R/R is the culprit. If they stay on, then you have a short.
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