Jim Weir wrote:
snip
the terminal strip somewhere between the firewall and the instrument panel
in an
easily accessable spot. Wire one lead of the terminal strip to airframe
ground
and the other lead of the terminal strip to a wire going back to the
aforementioned keep-alive breaker on the battery box. Then wire the clock
to
the terminal strip. Trust me, you will some day need to connect a radio or
other device to the keep-alive breaker and it is a hell of a lot easier to
run
two wires to a terminal strip than another wire all the way back to the
tailfeathers battery.

Do you also want some sort of current limiting resistor in line with
the clock wire?
When the solenoid is activated, doesn't it draw a slug of current?
I would hate to destroy the clock electronics as a result of current
spikes.