I am a big fan of the ML-ACR.
We bought our 2005 Signature seven years ago now, and I had to clean the Big Boy to make it work properly. When it failed again two years later, I switched to the ML-ACR, and have not had any issue since 2019.
i did run some wires to the front for the switch, but have since found the Spare Harness that Monaco installed, so it could have been a simpler install.
I have also installed one on our 1994 Signature, and have also helped install them on three other coaches.
Intellitec makes many great products. I do not consider the BigBoy and the associated control board their best work.
Paul