General Oil pressure switch wire?

[superscudo]

Hi all, i've just bought a 54 plate 1.9D el 1868cc van. On pre-start up the oil light doesn't illuminate. I've looked under the bonnet and found the oil pressure switch but there's no wire running to it, there's no wire floating about either that i can see. Could one of you kind people have a look under your bonnet to tell me what colour wire i need to trace so as to get a feed please?? Many thanks in advance, Andy.

 

[superscudo]

OK guys, sussed it. Just in case any one else needs this info it was a "Pink" wire that i needed. looks like it must have been Yanked off by some "Hamfisted" mechanic perhaps. Any way, all re-routed, connected and back as it should be.