Neil,Hi Ted my UK car has S620A Voice Control and S632A preparation for BMW handy Motorola. The mobile phone did work once but has long been disconnected. Guess I’ll need to disconnect the voice control and order a lead?
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That's correct! You'll want to order the "SES Blue 26 pin to BlueBus" adapter (there are three distinct offerings, depending on your car and how it was optioned).
You could always de-pin the requisite signal wires from that connector and use my "free" solution, but that's tedious work and a lot of people understandably don't want to fiddle with their harness.