Author Topic: 1979 Honda 125 xls  (Read 213 times)

Offline Josse

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1979 Honda 125 xls
« on: October 31, 2017, 10:59:45 AM »
Hi All.  I know this bike is not a four but I am sure some of the expert club.members will come up with a solution.
The problem is the headlamp bulb blows once the engine is revved over about 4000 rpm, according to the Haynes manual all the other electrics are rectified and regulated but the headlamp is not,it runs off AC through a yellow cable from alternator to lighting switch through a resistor that should be mounted on the forks but is missing. I have converted the bike from 6volts to 12volts and everything works fine 13.5 /14volts at the battery flashers work fine even with side and brake lights on. I don't fancy reverting to the crude lash up with a resistor in the wiring. My  solution would be to replace the original 4 cable silicon rectifier with a 5 cable rectifier/regulator from (China £6-00 inc p&p)then connecting alternator yellow cable to the new rectifier/regulator.
Would this be OK?

Thanks in anticipation
Frank Webb


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