Upper Housing Exposed
By opening the 10G
lock, the top pulls off of the phone. You can see the coin relay
electromagnets (labeled B in the photo) and the 101A induction coil,
insulated by an original rubber cover. Only two lines need to run
into the pay phone, those are tip and ring. They are the red and
green wires in the wall for the telephone. Additionally, two
wires are needed if you want to operate the coin relay, however, to do
that requires the coin
relay control circuit. Read about the coin
relay control circuit and see the one I built by clicking here.
