I got this. Powers off a lighter socket, ran the antenna wire out the same hole as the CB antenna, lets you use 6 FM channels on your radio to receive. On my old MH, I disconnected the FM antenna from the radio and never had to switch FM stations. That didn't work on the Sahara.
I replaced the radio in my RV a couple of months ago with an Alpine Stereo that has Apple Car Play. If you have a iPhone you plug it in to the radio and can use various iPhone apps on the stereo. The main one I like is the GPS function so you get an inscreen GPS unit. But you can also use iHeart radio and play music directly from your iPhone. And not only that but the unit also has AM/FM and the capability to do satellite radio it you want it, but I didn't hook mine up for that.
I just upgraded the radio on my and my RV. The car had a double din, and I put a pioneer unit with a touch screen that will do pandora, spotify, dvd/cd, bluetooth, hands free calling. I added a back up camera and could add satellite but didn't.
For the RV I got a single din unit (that is what the old unit was), real simple no cd player but does have blue tooth and a mic for hands free calling.
I spent about $300 on the car and less than 100 on the RV. Basically you can find wath you are looking for pretty easy. I did use Crutchfield and called their tech support a couple times as there were some set up issues that weren't well explained it the instructions, they are great to work with.
Another thought: It might not be needed to replace the radio.
First step is to check out the radio's owner's manual.. My Damon came with a Pioneer, on the back side (under the dash) is a port called the IP-bus as I recall.. (InPut)
I can plug in a whole bunch of different things there and even daisy chain a few Satellite Readio Module.. Yup, they made one CD Changer.. That too Line/Aux in (i can plug in any audio source including computer and mini-disc player) Got that as well
Cassett tape? No, they don't but I have one for my comptuer and see last item
So there is no audio source I can't feed into that radio, Even XLR Microphone (professional mics) can feed it via my Mixer/pre-amp (Which I have for other reasons) (Used to do some serious audio recording when my Daughter was performing near me).
Mine is capable of satellite radio but we just listen to music so I've not activated it. I like to choose my music so I just load up 3 or 4 hundred songs that I like (MP3's) on a pin drive and let-er-rip. If you listen to music and not just talk radio, after you choose which brand you want, I would suggest getting it MP3 capable along with a pen drive and cd. Mine also has Bluetooth which works great for hands-free phone calls while traveling or for transmitting music from my smartphone to the sound system. The sound is better than any BT I've had.
Martin's OTR, Is your current radio a standard one DIN size or a 2 DIN? If it is a 2 then look at the 6 CD changer types. A single is just a single CD type. Either way the only difficult part is running the antenna block to the outside. I guess some sets come with the combination antenna and it is still a pain. It's not hard, it's just a pain.
There are as many adaptors as there are car manufacturers. It will convert your RV's cable connector to the cable connector for the radio. It makes it a lot easier as there is no splicing, the cable connects to your existing system.
If you have to enlarge the mounting hole in the dash, there are molded boxes available on ebay to put in the hole and then mount your radio in the box.