Why doesn't the marquee on the motorcycle light up?

The light bulb burned out and the fuse blew out.

1. Bulb burnt out: Check whether the bulb is burnt out, which can be judged by observing whether the bulb is dim or black. If a light bulb burns out, replace it.

2. Fuse blown: There will be a fuse in the power supply circuit of racing lights to protect the circuit. When the current is too large, the fuse will blow to protect the circuit from damage. You can check whether the fuse is blown and replace the fuse with the corresponding specification.