Bought another Schmidt , after my Shimano-Brompton Hub Quit Putting out power

in 2 years, of only Local Use so Low Milage (But I'm only out $100, still got a Spare rim to re Use)

And Plug came loose several times.

B&M headlight Wire lead it's stripped then folded over in the plug, thats the contact.
perhaps splicing in thicker wire would tighten that up.