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Old April 22nd, 2012, 05:50 PM   #1
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Default Converting an 80s Suzuki enduro from 6v to 12v

I'm not sure if any of you are familiar with the 1980's suzuki sp 250 series but that's what I have. I've searched and searched TT, ADV and other sites, but keep getting conflicting results. I'm going to guess it's because there are differences in 6 volt systems from the 70s to the 80s. Here's the story.... When I get back stateside I plan on taking the MSC for my endorsement. That's about a month after I get back. In that time I planned on pulling all the plastic off my bike and going straight OD green. I also planned on pulling a dent or two from the tank and painting it. the point. While all the "skin" was off, I figured I'd convert to a 12 volt system. Now according to my supplementary service manual, I have a regulator/rectifier combo shown here...that apparently is on a 3 pin plug.

I have done some reading, but it is hard to decipher some of the answers that I have read. Here is what I gather...

*Replace rectifier/regulator with 12v version
*Replace all bulbs with 12v bulbs
*Replace 6v Batt with 12v Batt
*Replace signal relay with 12v version

....and I should be GTG. Can it be that simple or am I just kidding myself?
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Old April 22nd, 2012, 06:07 PM   #2
Christmas Cookie
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if it is 6v why change to 12v? And before this can be done you need to check your voltage output from your stator which is ACV...if your stator puts out enough voltage you can make your own bridge rectifier and regulator from parts from radio shack for under $20.00. The next thing you have to address is the ignition system. Is it points/condensor or CDI? Then check to see if the power for the ignition comes after the rectifier. If it does and its CDI, then you need to chock it back down to 6v for the ignition to work properly. If it's points all you will need is a new condensor. That wiring diagram you post sucks ass, as it tells you nothing. It all can be converted no matter what the design, it just falls on how much do you want to spend to do it, and how much you are willing to work for it. Also is it a postive ground system or a negetive ground system?

Here are some plans I made to build my own rectifier/regulator for my snowowheelers so I could add a 12v power source to GPS and such.

Last edited by Christmas Cookie; April 22nd, 2012 at 06:27 PM.
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