ng8264723,
Again, check wiring for loose connections. I also had a recent issue with my Kirkham/battery/alternator/dimming. I found the battery kill switch cables to be VERY loose, even after being checked on delivery of the roller and when complete. Those BB's are evil
I think that when my system needed the help from the battery, and charging for that matter, it simply wasn't getting a good connection.
rodneym