Cheers for the offer of the battery, but the wife managed to get one on the local car accessory shop.
Anyway fitted new batter and thought I would check everything else. Seems my original diagnosis (late at night) was wrong. It was the rectifier in the end. Luckily I had one in the workshop, would you believe it, it’s the same as the one fitted as standard to the 1100 Goldwing
In case you hadn’t realised I am into Goldwings as well as the MZ, I have a GL1500 Goldwing and 2 1100 models, one in trails trim
Anyway bike is all OK now, but I did find a couple of things out.
It seems that the Baghira suffers from a problem normally experienced by the owners of 4 cylinder Goldwings. What happens is that the connections for the alternator become weak and melt the plug. Eventually 2 of the connections touch. For some reason this results in a burnt out rectifier/regulator unit. Don’t ask me why, but it happens quite a lot on 4 cylinder Goldwings, particularly the 1200 models. This fault can also take out the alternator.
Hence it’s well worth checking the 3 pin alternator plug on a regular basis.
Keith