i have no oil pressure light at all, what could it be i have changed the bulb and have the wire connected on the pressure switch ?

 

Fucked pressure switch, broken wire in the loom, fucked bulb holder. . .

 

the wire that goes on the pressure switch is that supposed to be live ?

 

iirc you can just put the wire on the switch to earth and the bulb should light up this will check the wiring and bulb etc if it lights its the switch at fault if not work backwards checking wiring as mentioned above

 

No, that is the ground for the bulb, but you should see power at it, if you don't then you have a bad connection or bad live to the bulb even.

If you do then the pressure switch is at fault, as said if you ground the wire and the bulb illuminates the switch is the problem!

Martin