E9 dashboard clock not running

I beleive that the early clocks were electrical and the later ones quartz. Changed in 1972 or so?
Is it fair to say that the later, quartz ones are better.
The reason I ask, is that I have a few used ones (early and late model) in stock and am about to send off several instruments to the instrument repair shop. Perhaps I should forget about the early ones??
Is the wiring (power supply) the same for both clock models?
 
I have never seen the quartz version. Quartz is more accurate but the old one has its character.
I assume they both need just the connection to 12V and ground. In the old one the bulb sockets detach, so no special wiring for that.
 
I understood from someone on the board, that the early, elecro-mechanical clocks require much more power and can actually run the battery low in a couple of months. One of my E9s clock makes a loud, irritating noise when everything else is quiet in the garage.
 
I understood from someone on the board, that the early, elecro-mechanical clocks require much more power and can actually run the battery low in a couple of months. One of my E9s clock makes a loud, irritating noise when everything else is quiet in the garage.
Click to expand...

The E9 has probably no other standby current drain, so compared to modern cars with computers, alarms, GPS, MP3s, seat memories, key remote controls, and so on you should be fine. I am sure that batteries get low after a couple of months based on their own leakage.

As for the clicking noise, it is music to my ears. The best part of this clock
is that when you disconnect the battery briefly the clock keeps going instead of the annoying blinking display of digital clocks.
 
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