Westwood 10/12?

Hi can eney one please tell me what colour the wires are that go on the back off the key switch as some one has pulled the plastic plug of it is a 5 spade switch the mower don't have the right fues in it I believe it should be a 15Amp? Not sure the wiring loom has more than 5 wires coming out of it. The wiring diagram on the internet are about as much good as a chocolate fire guard all in black and white. The machine is a Westwood 10/12/36 and the year 1996 serial Number is 001509. A picture would be very helpful