Oil pressure switch 1.6 diesel

[SEFSPEED]

Can anyone tell me where on the engine it is please.

[colinthefox]

There are two oil pressure switches. One is in the back of the cylinder head near where the heater pipe comes out. The other is in the top of the oil filter housing. One does the ordinary oil pressure light, the other does the Buzzer of Doom. Trouble is, I can't remember which one does which.

High pressure switch (0.9 Bar/yellow wire?) closes when the oil pressure rises, the ordinary one (0.3bar/blue&black wire?) opens when the oil pressure rises.

[SEFSPEED]

Many thanks, now where,s my hammer.

[SEFSPEED]

I now find there is no power to the switch, aaarrrggghhh