–Drove to Sac with packed Beemer.
–While cutting the wires off the sensor (which turned out to be for the garage lights, not the (removed) alarm system light) I noticed a huge spark and learned I had tripped the circuit breaker–which controls the entire garage. I looked and looked and couldn’t find the breaker, until the third time I looked in the main panel and noticed one breaker not fully “on.” I switched all of them off and on, and we’re good. That could have been a disaster.
–Got chips and peanut butter cookies at Bel Air.