Oil Pressure Sensor + Temp Sender

Can anyone tell me what colour (or part number) oil pressure sensor I would need for my gf's 1.3 engine in her mk1 golf, I'm not sure of the engine code - will I need this so you could tell me which one I need?  There is also a choice of about 3 temp senders…

I have black on my GF 1.3 engine,and brown on my HB 1.1 engine.

I'll have to see if I can see the engine code on the block then, it was a bit hard to see…

Thanks though!