what oil sending swith for light is correct for my 95 audi quattro 90 on 1995 Audi 90 Quattro

what bar number do i need or does it make difference? got good oil pressure according to gauge. i have both light and gauge. maybe pinched wire? Dont think it is oil pump? dont know not mechanic

Asked by for the 1995 Audi 90 Quattro