oil pressure warning lamp on a 96 maverick 2.7td

[LOONIE]

Hi Guys has any one got a wiring diagram for the oil warning circuit as I need to trace a fault in mine. The senders ok and the dash bulb is fine.
Its on a green/grey at the sender and ends at the dash with red/yellow.
,ps Ive got a R20 manual and thats different.
Also what lights are on your lhs of the dash at start up? any help would be fine

 

[Thomas-the-Terrano2]

engine check and airbag.

 

[LOONIE]

Oil warning light

Solved my lack of oil warning light,There are two oil pressure swtches on the engine block.The dash warning light is on a red/yellow and goes via the connector on the air intake manifold down to the block just in front of the starter motor.I found that mine had been broken off at some point and the connector and shroud were hanging loose.
I replaced the oil pressure switch and hey presto a working light on the dash. This begs the question of what the oil pressure switch at the oil filter is used for, it has a green/grey wire attatched.Perhaps it is used to cut off the fuel in case of low oil pressure?