There is another discussion on the same topic; mine in our '06 fried before it left the factory and it was replaced with a Sony unit used the Apex's that year. It has peformed flawlessly.
2019 Winnebago 22M
2015 Jeep JK Rubicon
Former Owner, 2006 Alpine Coach 36MDDS
Former Owner, 2005 Tioga 31M and Arctic Fox 22GQ