"RBM" rbm2(remove wrote in message
...
The power may go from the switch to one fixture, and from there to the
second fixture. If the siding contractors removed the fixtures to install
siding, I would bet one of the wires going from the first fixture to the
second has come loose.

Good advice. Check the wiring in the box where the fixture is working and
you will likely find a bad connection to the fixture that is not working.