The design as drawn is intended to run up to eight typical automotive bulbs, such as you might find in indicator lamps. However, [Chris] demonstrates the circuit with just four. Flasher circuits ...

The indicator lamp requirement, which is included in the Federal Motor Vehicle Safety Standard that governs air-braked vehicles, was originally scheduled to sunset March 1, 2009, but had ...

The existing indicator lamp requirement originally was scheduled to sunset on March 1, 2009, but the National Highway Traffic Safety Administration published a final rule on Aug. 25, 2009, that ...