Strange one......just had eight house batteries installed all well. Noticed today that when I turn on the bedroom overhead room light, it doesn't work nor does one other part of the switch (vanity). The switch works on the two other connections just fine. I tried to turn on the bedroom from the front switch and it still doesn't work. The front with works on all connections just fine. I've checked the fuses and all seem ok. I'm perplexed as to why the back bedroom switch works in part and one that is 36 ft. away! Any ideas to trouble shoot further? Thanks to all!