Oil Pressure Switches

Can anyone tell me which is which? is the one on the top of the oil pump the high pressure and the one on the end of the head the low pressure?
One more question, what are the colour of the wires that feed each at the plug at the speedo end? This is on an early mk1 loom. I cant see a yellow at the plug that is supposed to be an oil wire.
Cheers

yep thats right, yellow and black/blue are the colours. mk1 its yellow for low, blue/black for high. the wire coloures swapped for mk2 golf, they may also be swapped for later cabrio not sure

I'll check again tomorrow but I dont think there is a yellow wire coming from the loom to the dash plug.
Is there a picture or list anywhere of order for the colours and what they do?
This is on an early LHD car. Will that make any difference?

see my sig, g1wiring81 & 81gti.pdf. its for the later cluster unfortunatly but same fusebox as yours. the wire could just be spare as early mk1s only have 1 pressure switch in the bay