Hi Chaps and Chappettes, hope you are all well and making lots of Mondial Memories! We've been busy using Kato clocking up the miles, having lots of trouble free fun until.....now. Minor issue I'm sure but electrics are not my thing really so here goes. The very cheap alternator a bought 4 years ago stopped charging, so blaming that I replaced it with a Bosch one and having fitted it today it also does exactly the same thing. 1.Symptoms are start Kato, voltage to battery reads 12.3 volts and then drops steadily down to 11.2 ish as it's running. 2.Before start up the battery light is ON and goes OFF as it is started- so that's correct. 3.Voltage actually at the alternator is the same as at the battery- so that;s good too. HOWEVER on measuring the voltage at the D+ terminal with ignition ON the voltage is only 1.6volts! Is that correct shouldn't it be 12 ish volts? I have to be honest I don't really understand how alternators work or regulate the voltage so as no to overcharge the battery. Your high voltage input would be greatly recieved Folks! All the best Bell.