Blue Square Electrical Control System
Engine Plug and Socket
This was a ten-pin "Niphan" plug/socket with a threaded ring on the plug to secure in in place.
On either side of the conduit behind the socket can be seen the two oil pressure switches.
Description
From the BUT 50000 Series Service Manual:
Certain engines are fitted with a plug and socket, designed to provide a common connection for the cables to the oil pressure switches, engine speed indicator generator and the engine shut-down solenoid. This obviates the necessity of disconnecting cables at three points when removing an engine from a car.
The cable is carried in steel conduit which is secured to the engine by brackets and clips.
Schematic
The schematic shows the electrical connections that pass through the plug/socket to the components fitted to the engines, as shown in the BUT 50000 series manual. Number one engine is on the left, number two on the right.
