The surprises never stop, any ideas why someone may have swapped yellow with white?. Otherwise I switch back and it hopefully works 

 

Can't see enough in the pic but will both come from the combined lighting & charging coils so just a different rate of charge or maybe they have been running No Battery & found the yellow would blow the bulbs unregulated by the battery taking the extra, so they've found the white worked ok at revs without shooting the light to pieces. I guess yours is a sealed light. Ours are bulb type so relatively cheap to experiment with & blow bulbs. that's my guess for the day. But still doesn't explain why they swapped colors does it.

LOL po was color blind?  Both ends female? If so...Can't be explained like Area 51 and such.

Even more perplexing PO could have just swapped plugs and avoided work