All CAR alternators have a DC output, however there are alternators for other applications that output AC (110 or 240vac- some even look like car alternators)- these are were used on coaches etc to provide AC for things like tv's, players, microwaves etc in the old days), there are also various voltages available (12vdc,24vdc, I have even repaired a 48v bosche)He did mention that it was a car alternator in the instructible
DIY Power Supply !
I made this conversion ages ago, slight difference was I used a 12v7w light bub on the 5v line for loading (dual purpose- gives loading and acts as a power light), put a switch (actually a hpm/clipsal mains light switch) to the green sense wire/black wire and fitted it where the old cables ran out (fitted perfectly). It was (and still is) used for powering my radioCouple of hints when drilling the holes, put a bit of timber under the metal, and it wont bend like seen above, also hold the metal with locking pliers/vicegrips and not your fingers- it is quite likely that the drill will 'grab' when it goes through and can end up spinning around with the drill- you can badly slice a finger doing this- at worst lose one!!!! be safe!
Most tail/brake lights actually have staggered locating pins on the side, which makes it easy to get them the right way around- notice the locating pin on the left is higher than the one on the righthttps://s20.postimg.cc/fxa9oii99/trailer-motorcycle-19-led-red-white-1157-bulb-profile.jpg
Good job, I espectially like the slidersI did a similar thing with my dewalt battery, a couple of lighter sockets and a dual usb lighter for usb charging, lasts forever as a 'battery bank' doesnt it, only difference is mine has the 'tower' top to the battery so sits on top of the battery with a hole for the tower to go into. Like you, I found crimp terminals (in my case for the dewalt battery, a pair of female spade connectors fit perfectly onto the battery terminals, glued into a piece of plastic to hold them in position)
Itty Bitty Mini Forge