Wiring is the same if you go for a rns510 version D onwards you would also need to change your gateway to prevent battery drain. If your interested in a rns510, gateway etc drop me a pmSorry for the late replies,
JMCR32: i've got a Kenwood DDX6027 with Sat Nav atm, came with the car but i prefer the OEM setup.
SCOTT1979: nah blue 3 door 55 plate, do the RNS510's work with a 55 plate? Theres nothing weird like the wiring is slightly different on earlier cars like theres a difference in interior trim?