04-24-2020, 04:55 PM
Looks like a bit of green corrosion on the cables connected to the isolator. Good idea to pull them, clean them up, and coat with something. While you have them off bend them and make sure they don't feel crunchy. If they do there is corrosion inside the wires. That could cause resistance and could add to your problem of low voltage.
Forest & Cindy Olivier
1987 log cabin
2011 Roadtrek C210P
PO 1999 Foretravel 36'
1998 Newell 45' #486
1993 Newell 39' #337