[ARC5] BC-AO-230 Power cable connections

[Radioroslyn via ARC5]

I think I've got most of it figured out:
20 HV for final 
21 HV for osc and modulator
22 ??
23 sidetone output
24 Ground
32 ??
33 Mic input
34 Mic bias and filament supply

Any guess as to what 22 and 32 are for?? Other connection seem right??
Tnx Much
Terry N3GTE