Not to divert to earlier, but here is my charger supply.

$20.00 for the Supply
$4.00 for the Light Bulb Jack
$2.00 for the bulbs.

$26 total for a regulated charger supply that provides a 16A 12V supply and a 35A 5V as well as a nice blue light for the shop.

I put the bulb jack in the hole that the original wires all came out.

Was a lot of fun and educational adventure. Re-learned a bunch of electrical theory from years ago as well.

Hope this helps.

Jason

FYI: the second bulb on the right is not attached but a sample of the bulb used and the bulb holder.