Well, I figured out how to install Mavericksters hacks by searching this forum and reading almost every topic and post. Taken me days, but i've done it and I'm chuffed - thanks Mr. Mav
Just to confirm, I'm in the UK, using a 500 model, and the following needs to be altered in the 'Testmode' folder -
MITACAP/Testmode/APL2/iGO/content/MapDBInfo - Change "Area: UC" into "Area EW".
Now I'm off to do a proper install - already mounted the bracket and cradle mount (minus the HUGE suction cup) on a central air vent, so it's down to hiding all the wiring and interconnecting between head