dandick66

I think it’s because the GPS manufacturer’s have figured out there is a niche market for the larger displays and they charge what the market will bear.  
 
As far as accuracy of Garmin vs Android or Apple, I really don’t trust any of them 100 percent.  I just drove from Virginia to Florida and back in my 2020 Ram pickup.  It has the 12 inch display with built in navigation.  Unfortunately, the maps are outdated and they want $150 for a new map.  When I connect Apple Car Play or Android Auto, the display shrinks to a much smaller size.  Anyhow, I’ve made this trip many times and know the route/roads.  For some reason Car Play wanted to route me different ways, both going from Virginia and Florida.  
 
For the reasons above, I always look at my route on a tablet or computer so I have a good idea of where I’m going and what roads to take.  It’s not a big deal with a car, but as we all know the coaches are a different breed.  
 
Trust, but verify is a good mantra for GPS navigation.  

You might want to try your local Ace hardware.  I know most of them make screen frames.

FWIW I’ve had good luck with the Nilight relays their other products.  

Dave,
Good to hear you got the adapter and software.  I think you’ll find the NEDs does everything you might possibly need.  The way I look at it, the cost of the software and hardware will pay for itself in 1 visit to the dealer.  
As you know, the Maxxforce has a pretty bad reputation.  I didn’t realize that when I bought the coach.  However, from what I’ve been told, the Maxxforce 10 did not have the problems.  I think it was the 7, 11 and 13.  I really can’t complain about the performance or reliability of my engine.  I’ve put about 25k miles on mine since I got it.  I think it has about 47k total miles.  IRV2 has a Maxxforce section on their forum.  I’ve got some help there.  I’ve downloaded a lot of stuff for the Maxxforce engine on the internet.  Send me your personal email address and I’ll send the files to you.  
Dan