Something is wrong with my GU10 base LED light bulb or with the light fixture but I don't know what's at fault. The fixture/bulb doesn't work and has never worked (new install). The fixture was professionally installed. Now I've removed the light fixture from the mains and am trouble-shooting.
Trouble-shooting is challenging because I have only one fixture and one bulb with a GU10 connection.
With incandescent bulbs I could easily check to see if a bulb was damaged. A visual check of the filament was an easy initial check to see if the filament was burnt out and a test for (lack of) resistance with a multimeter would confirm whether the bulb had a complete circuit.
My multimeter doesn't report a complete circuit, even for a known good bulb of a different type ('regular' screw base) and I have only one fixture that accepts GU10 light bulbs.
I've checked the terminals on the base of light fixture and a complete circuit exists between the incoming (and outgoing) wires and the base in which the light sits.
My gut says that it's the light but I am not sure.
How can I easily confirm that the LED light bulb works the way I used to be able to with incandescent bulbs?
FYI this is a similar bulb as sold by Amazon.