WX Radar and Exterior ligths test during re-fuelling?
Dash6, you're rude. He's merely inquiring. Answer or refrain.
Ontopic; our SOPs allow all switching except keying HF during refueling.
Having said that, I would not test the wx radar either, but that's not more than, hmm, common sense but not based on any facts, so might be overly cautious.