In the video we kill AC power to the light fixture - remove the screws holding the old light fixture - cut the caulking around the base of the light - remove the light from the house siding - test to verify there is no power to the light with a voltmeter -release the AC power wires to the light - install the new light fixture.

How to use a clamp meter to measure current, voltage and resistance :
   • How to use a clamp multimeter to meas...