GrouchyOldMan
On my RV I bought the one linked on Amazon,it was a direct replacement for the one I had. Yours may be different.
I checked all the major parts houses around me and found that all were more expensive and some places they had to order it.
Being a Prime Member I got it the next day,it also helps that one of their largest warehouses is less than an hour away.
As for when I start the RV when plugged in my Solenoid kicks in and charges my coach batteries at 14.7,same as when I am driving.
One hint, you may try thumping it lightly,the points may be stuck.This was suggested by my long time mechanic.
Good luck and let us know how it all works out.
