Trying to locate the switched 12+ cable in the terminal block on the rear of the standard skoda symphony head unit (with CD changer)

I have a choice of

2 x thick red with white trace

1 x thick Brown

Thin blue with white trace

Thin dark blue and grey trace

Thin grey with white trace

And a thickish yellow with red trace

Thank you 20250705_140455.heic

2002 laurin & klement

From experience the thick red white wires should be positive(12v) and the thick brown ground. You can use a multimeter to check the voltage aswell as figure out witch is switched by mesuring the voltage when the ignition is on/off. Note that the ground wire can be the one that is switched