1985 xl125rc

[xl125]

hi i have a 1985 honda xl 125rc had it about 2 years now but it has just started 2 play up . when you have the lights on it will not charge. with lights off hits abouts 13.6 up to 14.3 when rev. when lights on drops to 10.9 then slowly drops more. Anyone know what the problem is and how to fix it?

many thanks mark

[Bill Badger]

Sounds a bit like regulator trouble. Control of voltage ok at low load but suffers when more current required.

Is it a Japanese bike or Italian?

[xl125]

hi there it is a jap one thanks