Thanks Old Biscuit, more details
Factory installed living quarters. This is a new problem, everything has worked fine for 4 years until now. It is a 110 system. We took the trailer out in July and noticed the lights would dim and go bright several times an hour. e thought maybe it was because it was a full campground on the 4th of July weekend. Then the next time we used the trailer which was this week we were plugged into just a 110 for lights and tv and bam, tv goes off and micro clock goes out and we were back on dc battery power.