Should the GFCI light always be on?

Yes, the GFCI (Ground Fault Circuit Interrupter) light should always be on to indicate that the outlet is functioning properly. If the light is off, it may mean the GFCI is tripped or malfunctioning, and the outlet may not provide adequate protection against electrical shocks. It's important to regularly test GFCI outlets and reset them if necessary to ensure safety. If the light remains off after resetting, it may require professional inspection or replacement.