The Curt Echo Wireless # C51180 requires the 12v power pin to be hooked up on your 7-way connector as that's how it turns on.
As long as the 7-way connector on your 2016 Subaru Outback has that you'll be able to use the Echo no problems. You can test this with a circuit tester like # PTW2993, and look for a pin that has constant power when the vehicle is on.
If your 7-way does not have the 12v power pin run you'll need to use # 10-1-1 and a 30 amp circuit breaker # PK54530 to activate it. view full answer...
The roof rack/ladder rack setup you are going to need for your 2021 NuCamp T@G XL Boondock is the Thule TracRac CapRac part # TH29200XT as it has 69 inch crossbars. Since your tracks are 65 inches apart there isn't a Rhino Rack setup that would have a long enough crossbar setup. view full answer...
Since the Dexter Electric Trailer Brake Kit - 7" - Left and Right Hand Assemblies - 2,000 lbs # 23-47-48 is what NuCamp installed on your trailer, it is what you want to use for a replacement on your 2018 NuCamp TaG XL Outback.
The size of the brakes used is 100% dependent on the size of your axle, and is dependent on the tire size.
However the drums themselves will be rated for up to a specific tire size, as the contact area of the drum to the wheel will only support a wheel so large.... view full answer...