Hi All,

Back in the dark ages (60s,70s, 80s) cars had little bulbs that would come on to tell you your battery was no longer charging.

There have been a few people on the Peugeot007 self
Help FB group Im on whose alternators have died, but their cars not charging light hasnt illuminated (despite its passing its POST before the problem and after its been rectified (see what I did there).

Got me to thinking, how were these bulbs driven in the past (i.e, what electrics / electronics / circuit lit them when charging stopped)?

And how are they supposed to work in €œmodern€� Cars?

On the €˜007, I believe its an LED and I SUSPECT its fed from the ECU??

Anyone know?