I have a found a cable unplugged on my Audi in the engine bay and wondered if anyone knew what it's for? Also my fuel gauge has a mind of its own. When I bought it said half fuel even though there wasn't that much fuel in it. I filled the tank up to full and it went up to full but isn't moving. The trip computer which is a full dis is going down. Do you think this us the speedo or the sender in fuel tank?