12v/24v plug in

Juddian:
Younger members here won’t remember when many cars had ammeters or voltmeters or most importantly an oil pressure gauge in the dash of surprisingly humble cars…

Oddly my relatively modern car (Citroen C5) has a battery guage but it the only one I’ve seen it on since my dads last Mini (long before BMW version). Suppose its all in the computer now and requires the car reader machine to check, for a fee. About time they were reintroduced.