This assumes your car is still factory with the blaupunkt 937 unit - aftermarket head units may require different keys / devices to remove them. Radio removal keys (or equivalent tool are also useful). A small amount of wiring is required also but this could be achieved with slot locks if required. Tool wise you will need a small hacksaw or saw blade, possibly a Stanley knife too and a Philips screw driver. A Connect Nav does have a 'Master Code' but you can defeat / avoid this if you don't have it. Ideally you need this to come with the factory mounting cage, GSM telephone card and satnav CDs. Okay, so you're going to need a Connect Nav unit. Please be aware additional steps may be required for BOSE installations - as detailed below This guide assumes you have already mounted your GPS / GSM anetnna and microphone. I know there is already a connect install thread out there but the OP made it sound very difficult to do and could be off putting for some people and I don't think it needs to be as it is actually a simple enough 'operation' to perform.
