On my last trip the solar wasn't charging the batteries (now fixed) and I then noticed that the truck wasn't charging the batteries when I was driving. I saw some corrosion at the 12v location on the trailer plug but I wasn't brave enough to work on the plug while on the trip. Now home I installed a new trailer plug thinking the 12v connection in the plug was bad. I connected the new plug into my truck, turned on the truck and checked the battery monitor (Bogart Engineering). I saw no change in the amp reading on the battery monitor. The turn signals and trailer lights worked. The batteries were fully charged and the monitor read positive .2 amps due to the solar panels charging.
Am I correct in thinking I should see a change in the amp reading on the battery monitor when I plug it into the truck (2020 Chevy Silverado)? I've read on the forum that trucks do a poor job charging the batteries, but shouldn't I see some charging?
If this is true, my next step will have a mechanic test the truck 7 pin connector. I already have a service appointment for the end of the month for other things. I'll just add it to the list.
Thanks for any ideas.