1977 overlander

[rangerchief]

Is there a way to use my trailer in a cold climate and have water etc. want to live in it February, March southwestern Michigan in a park. Are the water pipes where they could be kept warm??

2. 12 volt lights were on for a few minutes, then went off. checked battery and found a plug that was not plugged in. after I get the battery checked, should I plug that plug back to the battery???? I need help.

[ALANSD]

if you run the furnace it should keep everything warm enough for most cold weather..the water pipes are above the floor level..