The 'minus wire' connection looks a bit rough, like it might have flux and burnt flux imbedded in the solder joint. But as the OP said, if it withstands a good tug, then it's probably ok.

The diode has to be 'backwards' (non-conducting unless you reverse polarity), i.e. the side with the silver ring connects to the '+' side of the capacitor. Hard to tell from your pic, but look again at the first post; it shows the silver ring side of the diode soldered to the '+' side of the capacitor.



Has anybody tried to butcher a 110V AC '60W' LED replacement bulb (17 W, 850 Lumens typically) for bike use? They seem to be cheaper (<$20 at Home Depot) than the modules used here.

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