Typical applications are: multi-point injectors,
some Lucas / Rover SPI injectors, crankshaft position sensors
(inductive), camshaft position sensors (inductive), coolant temperature
sensors, knock sensors, some Vauxhall ignition coils, some Austin
Rover ignition amplifiers, pulse air solenoid valves, Bosch K-Jetronic
thermo-timer switches, cold start injectors and warm up regulators,
to name but a few.
Please note these are only examples - wiring plugs will vary from
manufacture to manufacture, and with the model and age of the
vehicle.