The cradle will not charge by using the GND and +12v alone mate, it must also have the Cradle_on (from the ULF) connected too.

Do not connect the white to anything other than pin 11 on a ULF (so dont connect to power or gnd), cradle_on is a control wire not a power/gnd wire.

__________________
Sept 03, M3, Silver Grey. Retro-fits: Modded Mk4 DVD Drive, OEM Bluetooth, VR Control, Rainbow Speaker Upgrade, Sony SOT Amp, HK Sub, CCFL, Intravee II, NightMode.