Yes, Jerry, the Aladdin must get its Leg1 and Leg2 voltage and amperage info from that other gray box. In our coach, the other gray box is about two inches away from the transfer switch box and downstream in the power flow scheme. I was guessing in an earlier post that this other gray box might be a surge protector but I am unable to tell because no label is showing... and I didn't want to take the box off the ceiling to see if there is an ID label on its topside.
BTW, I still have not taken the old contactor modules apart to see if their contactor parts have been compromised. I spend about half my waking hours watching the stock market, playing golf, and completing Leslie's to-do list items.
