A buddy was working on his new instrument panel, with some of the electronics boxes already mounted and wired, when I noticed a tiny chip from drilling had gotten into one of the boxes. I had him vacuum it out. Can you imagine how hard that would have been to trouble-shoot if it had been missed?
For that matter, vacuum all of the connectors before installing them. It’s a lot easier than trying to figure out a glitch on some box that checks out fine on the bench.
