Oil light?

Oil light not coming on when ignition switched on, any help greatly appreciated

Bad wire at the sensor,, bad sensor,  or bad low pressure assembly in the inside of the speedo.

If I remember correctly, the sender on the head is shorted at key in and run and that enables the lamp to be lit, untill you start your engine and the Oil Pressure comes up as it is the .3bar switch

So:


Take the wire of the sender and short it to ground
Turn the key on to run if the lamp lights, then the sender is bad.  If the lamp doesn't light then your issue is a bad wire from the speedo to the cluster via the fuse panel, or between the fuse panel and the cluster or a bad oil pressure warning circuit board.  Then of course it could be a bad led.  You can start your engine, then remove the wire off the sender on the oil filter flange and rev the engine above 2000 rpms  it the light comes on and the buzzer sounds then you know that the led is good and the internals of the cluster should be good.

Find the yellow wire on the clocks main connector, and short it to ground, then turn the key on to run.  If the lamp comes on then you will need to run a new wire to the cluster from the switch.  If it doesn't light then look at the clocks internals.

Thanks