[Darren69]

Yea, it's a factory special like the S4 Foggy, and like the Foggy it was probably made off the main manufacturing line so whatever bits they had went on! I'm not sure myself exactly how the fuel sender works besides the theory or how accurate it is, maybe there are holes for the fuel to sit in? Dunno. I can check the wiring diagram I have for the '01 S4 but my guess is that there is a live feed of a certain colour from ignition or one of the relays that are live with the ignition on (fuel pump etc) and then there will be an earth (black maybe). will check and let you know, maybe if you're lucky your wires will match mine?