Fixing a dodgy speedo wiring loom and seen this other 4 pin plug left dissconected. It has a corresponing male connector in the vehicle loom but its been left disconnected. Only just got the car so I have no idea whether to plug it in or not.

 

On a MY99-00 the three plugs on that loom section are speed sensor, lambda and neutral/reverse switch. Not sure which model you have.

 

Yeah its a '99 V5, so must be the reverse light switch. Suppose i better plug it in then. Cheers