I'm confused now Zummertor told us a while back that he:
"Ended up buying 54Reg GM, GT Pack, Parking sensors with 8.5k on clock with a chip on the bonnet for what I thought was a good price plenty under 17k, UK car and all HPI'd etc. etc"
I took his comment about the parking sensor noise, as he has a UK car with the sensors, to be not only the beep when you engage reverse gear but the beeps before the BANG!
Zummertor to the rescue please - apologies if I have misunderstood