X2 for monitoring your battery. It could be low and needs to be charged. You'll need a digital voltmeter to check your battery state of charge.
Between trips, is your battery totally disconnected from the trailer or do you have your trailer plugged in to keep the battery charged?
Sherm & Terry w/rescue Eydie (min Schnauzer) & Charley (std Poodle)
2015 Jay Flight 27RLS, GY Endurance (E), Days: 102 '15, 90 '16, 80 '17, 161 '18
2006 Ford F350 PSD, 4WD, CC, LB, SRW, Cmpr. pkg, Equal-i-zer 4-p, Continental ContiTrac TR