[kgw]

This is appears to be different than a Mk IV....No 75 stud to get switched 12v from I had a suggestion to use the #10 position in the dash endpanel fuse block, but on my A3 it says its the passenger seat occupancy sensor: is that a switched circuit?

 

[kgw]

It appears I can get all I need to set up the new oil pressure gauge from the light switch:

"I just fitted newsouth guages the wiring I found easist I tookit from the headlights. White wire goes to headlight dimmer(blue and White wire)
earths there is a bolt under the streering column your see it when taking
dash off. The red wire I took from ignition live on headlamp switch
on the back. Black and white wire it is."

 

[kgw]

All wired up to the headlight switch :thumbup:. Colors vary depending on model and year, though! The NewSouth install sheet has the layout of the light switch wires, including the number position in the connector:

I don't know how to format the layout to clearly show the layout