Curtis Computer 833 Marine Instruments User Manual


 
9
Pin 3 = Relay (+)
Pin 3 connects in series with the lift coil circuit (or
the circuit to be switched at empty).For holding relay
(J), Pin 3 must be electrically closer to battery +
than Pin 4
Pin 4 = Relay (–)
Pin 4 also connects in series with the circuit to be
switched at empty.