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1976 Kawasaki Kt250.


motolimes
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Not sure if this is the right place to post this, but I need some help. I'm fixing up a 1976 Kawasaki kt250, and the lights are burning out. I figured it would be a voltage regulator, but I'm not sure where, or if, it even has one. If I could just get some help from people who know more than me, that would be great.

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Blowing bulbs was pretty commonplace at the time they were new. Yes they did not come with a voltage regulator so the voltage goes up and down with RPM.

A simple way to avoid blowing bulbs is to fit 12V (or 24V) bulbs instead of 6V but they will not be as bright.

Another option is to fit a ballast resistor in series with the lights to drop the voltage.

Another option is to fit a rectifier and battery to stabilise the voltage.

Another option is to fit a voltage regulator. The one I use on an SP370 that I ride without a battery is from a 1980s Husqvarna and it limits the voltage to about 13V so is perfect for 12V bulbs.

 

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Is the sp 6 volt ?

 

Mine is an Australian SP370 and I'm pretty sure it was 6V, but the lighting circuit went to about 18V during normal riding without a battery. I only rode it with a battery until the motor was run in, then it morphed into an enduro bike using RM250C parts

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re your kt over the years i have fitted a small wire wound resistot on various off road lighting set ups , the one i use is from one of the small hondas, costs about £12 and is easy to fit having just one wire , i will be back in my workshop on thur and can sort one out if you wish (complete with a simple wiring diagram) pm me if this is any help, will.

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