The test bed has the motor PCB and regulator installed, I used a strip of Aluminium as a heat sink.
Ran into a bit of a problem, I purchased the PCB off Fleabay and it turns out to be quite a late version off a Mk5G.
At some point Technics have changed the multi pin socket that connects the Start/Stop & 33/45 buttons, because the socket on the board is incompatible with the plug on the switch harness off a Mk2. Doh!