This is the circuit of a simple 12 volt battery charger for Lead Acid battery ... Ampere meter is provided in the positive rail. LED act as the Charger on status. When the output is connected to the ...

A yellow LED confirms the ECM is present, while a green bulb verifies there is a ground. A series of red LEDs indicate which circuit (brake, turn signal, taillight, reverse, and 12-volt auxiliary ...

1980s track lighting retrofitted with 12-volt LED bulbs and decorated with religious mirror ornaments from junkyard cars. I also have some discarded 1980s track-lighting fixtures, which used 12 ...