2021 Thor Miramar 35.2 Axxera ASC419N Radio Replacement

[lfitchinazrv]

Another thing... I think the rear camera has audio too. Not sure where to plug that in. currently, the white RCA (Audio) is not plugged into anything.

 

[ducksface]

Mine was just an example.
I know nothing about it.

 

[16ACE27]

Another thing... I think the rear camera has audio too. Not sure where to plug that in. currently, the white RCA (Audio) is not plugged into anything.

Your radio owners manual should tell you where camera audio is connected (it does on the Axerra). It will bypass the automatic switcher so you may need a RCA extension cable.

 

[lfitchinazrv]

Your radio owners manual should tell you where camera audio is connected (it does on the Axerra). It will bypass the

automatic switcher so you may need a RCA extension cable.
The owners manual says 'here' but there is nothing pugged in here. There is a white (audio) RCA Jack. I should plug it in and try it.
Nothing in the manual discusses the small plug. the the CAN UART notes.

 

[lfitchinazrv]

OK. so.. I bought the BOSS BECPA10W. It has wireless CarPlay and Android Auto. Unit seems ok.

This has to be a single DIN radio replacement. You can't fit a double DIN in the dash for my 2021 Miramar 35.2. See pics.

After removing the current radio, I realized that I needed to cut a new opening. I started to cut out the hole for a 7-1/8" x 2-1/8" single din slot starting at the bottom of the existing cutout. I soon realized that there was a board on the underside of the dash that prevented the radio from going in at that level. I had to move the cutout all the way to the bottom of the recessed portion of the woodgrain dash.

I have the ability to 3D print stuff. So, I made a really nice cover for the dash. (see pic below) I have the step file if anyone can access a 3D printer.

Here is what I purchased and the steps to install a new system.

1 - Small monitor for full time rear view. We had a full-time rearview camera in our other rig, and with this change, it gave us the ability to add that back. https://www.amazon.com/dp/B0DFH8Y88N?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1

2 - Connector to adapt to the chassis cable. (Note, I bought the connector and crimp pins for my assembly. Amazon.com

3 - Video switcher. Amazon.com. Can also use the CRUX-CSS-41 from Crutchfield.

Step 1, Remove the dash cover. This thing is attached with Velcro. Be careful while prying it up, so it doesn’t break.

Step 2, Remove the cover behind the screen of the AXXERA ASC419N. Remove the screws on top of the metal plate that is underneath. Unplug the radio monitor from the front of the radio unit that is bolted to the dash wood plate. Remove the monitor.

Step 3a, Unplug the radio cable at the large 3x4,12 pin connector. (I originally thought that I could reuse the radio cable, as it looked the same as the one on the BOSS. But the pinout was different going into the radio.)

Step 3b, Follow the parking brake wire and if not labeled, label it on the chassis harness end. Cut the wire.

Step3c, Label the camera cables and other wires attached to the back of the radio. Unplug all of the cables attached to the back of the radio. (Note, there is a Sirius XM SVX300 Tuner attached to the radio. My radio was not XM ready, so I removed the box. I think the antenna cable might go to the roof, so I left that in there for future expansion.)

Step 3d, Unplug the USB cables that run to the imports in the cubby of the dash. Label the one with the blue end as the Android Auto/CarPlay. That way, you can tell which one to plug your phone into if you want wired Android Auto or CarPlay. The one hidden in this photo says something about iPod control. That would be the Android Auto/CarPlay connection. Remove the radio

 

[lfitchinazrv]

Step 4, There are 2 other small boxes with a bunch of wire attached. These are where the turn signal and reverse signal wires are attached. (I am really not sure what the other wire does, it might have something to do with the Steering Wheel Controls. (SWC) It is labeled UART TX or RX and went to the back of the old radio. I left them out for now.)

Step 5, follow the red and black wires from each box. Snip the wires about 3-4" away from the crimp nut. This will allow you to tap into 12V and GND without having to remove the crimp nut. (I wish I woulda thought of this before I cut the crimp nut off).

Step 6a, follow the right and left turn signal wires as well as the rear camera. If the wires are not labeled, label them on the chassis harness end. Mine were: [blueish purple, Rt Turn]. [Green with yellow strip, LT turn] and [Green, Rear Signal]. Cut the wires.

Step 7, Remove the screws that hold 2 little boxes and remove them and the wires from the dash.

Step 8, Take the cable that came with the new radio and the cable from #2 shopping list and crimp the wires per the radio schematic. Note the orientation of the connector when crimping wires. It only plugs in one way. Note: the chassis harness has wire for 4 speakers, +12V (red), GND (blk), ACC/ILL (org) and Constant (yel). Verify the following pic matches the chassis side of the radio cable.

Step 9a, Attach the video switcher Input RCA cables to the onboard cameras. I only used left and right. (no need to attach the power leads on the input end of the RCA cables.) If you are using the rear camera in reverse mode, attach it too. If you have a front camera, plug that one in.

Step 9b, if you are using a full time view rear camera, plug the RCA cable coming from the rear camera into the Rear view monitor instead of the switcher.

Step 9c, Plug the Video Output RCA from the switcher to the rear camera Input on the radio and crimp the Video Power Output +12V to the Reverse Gear Signal from the chassis harness.

Step 10, Crimp the Left and Right Trigger/Signal wires to the indicated wires of the video switcher. (If you are using the rear trigger, crimp that too.)

Step 11, Crimp the 12V ACC and GND wires of the switcher into the cut wires from Step 5.

Step 12, Crimp the Parking Brake wire of the radio to the cut chassis wire from Step 3b.

Step 13, pull all of the wires thru the opening and plug into the back of the radio. Plug the Microphone cable, GPS antenna cable and FM/AM antenna cable into their prospective connectors. Plug the main connector into the back of the radio. Plug in the USB cables.

 

[16ACE27]

Great write up! Something to watch out for with your 3D printed item. I have found that PLA items tend to weather and crumble after a few years even if not exposed to sunlight.

 

[lfitchinazrv]

Great write up! Something to watch out for with your 3D printed item. I have found that PLA items tend to weather and crumble after a few years even if not exposed to sunlight.

yeah. i am aware of that. I was thinking about printing several in case that happens. This is from a high quality polyjet printer. it should last awhile. I have access to this one.. it has better quality prints. Origin One 3D Printer | Stratasys Support Center

 

[jeanluc001]

just get a seperate monitor for the cameras and get any radio you want.

 

[lfitchinazrv]

just get a seperate monitor for the cameras and get any radio you want.

Did you not read the thread? I did exactly that.

 

[16ACE27]

Did you not read the thread? I did exactly that.

You beat me to it.

I ordered the same monitor you linked today along with a camera to install in the grill of our Colorado to make hooking it up to the MH easier. When towing the Sonic it was easy to see the hitch ball, the Colorado is lifted too much for that.

 

[macdaddy1111]

How many hours spent on that beautiful write-up?

Very impressive!

I just installed 3 bose speaker bars on all TVs and can rattle the windows!

 

[The Rookie]

I’m just catching this thread. Outstanding write up! Most of it doesn’t apply to me, but I still read it and appreciated it!