Oil pressure warning LED operation.....

[rockthebus]

Hi All
Apologies if this seems simple to some, but...

Why does the pressure warning LED light up when the ignition is first turned to position2, and then go out immediately?

It doesn't light up again....

Thanks

[wee bugger]

it'll normally stay on for a few seconds to show its working as the engine starts, goes out and should only come back on if your pressure drops...

[rockthebus]

Thanks
Somethings amis then, as it goes out even before the engine is turned.
There seems to be a myriad of coloured switches, white, black, grey and blue

I've never heard the buzzer sound for the high pressure, any ideas which 2 should be fitted as standard for an imported 1990 Atlantic 2.1 Digifant?

Thanks

[rockthebus]

Update from today. .
Took the pushrod tube cover off. The pressure switch was a 0.15 to 0.45 bar one. Is it ok to fit a 0.15 to 0.3 one?
Whilst the wire was off I grounded it and turned on the ignition. The led lit for a second and then went out without the engine being turned.
What should I look for now?
Any ideas greatly received
Thanks