Not charging from alternator

Help with cruise America 2015 Thor majestic 23a not charging from alternator. My coach battery is not charging from alternator, I know my alternator works, and so does the battery, any suggestions for trouble shooting? I have checked all if the fuses I can find and reset the 40amp breaker. It charges from shore power/generator but not the alternator. I have noticed I cannot hear the solenoid click when I put engine in run or hit the emergency start switch.

Thanks!