Battery charge monitor
Moto Guzzi V700, V7 Special, Ambassador, 850 GT, 850 GT California, Eldorado, and 850 California Police models
Thanks to Hayden for making me aware of this product. In Hayden's own words:
Single LED battery monitor useful to indicate pending battery doom...
I have used this unit before on classic motors and it is simple, dirt cheap and reliable. My Norton Commando has not managed to shake one apart in 10 years. Full instuctions and specification available on the website for download.