I have 100 watts manas:ged by a Sunsaver SS-10 PWM controller in my vehicle. I have a freshly rebuilt stock alternator and external voltage regulator.
A few weeks after installing the panels & controller my battery warning light started acting wonky. It is flashing at different rates and levels of brightness. I am fairly certain that it is the charge controller pulsing as I can't recreate the problem when it is disconnected but I usually can when it is connected.
Morning star says:
Engine generators and other sources of power may be connected
directly to the battery for charging. It is not necessary
to disconnect the SunSaver from the battery. However, do
not use the SunSaver to regulate these other generators.
My theory is that the SS-10 is hitting it's set-point voltage (14.1v for a sealed battery) while my alternator is usually below that. The voltage regulator is then utterly confused when it senses the battery voltage is inexplicably higher than the alternator's voltage. Or something like that. I can't really explain this electrically.
It's driving me nuts but I don't want to electrical tape my warning lights. I kinda need them.
Can anyone explain what may be happening here? Is something going to be damaged? Any suggested fixes?