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DIY: 2013-2017 RA3/RA4 8.4" Radio Upgrade/HVAC Conversion

Discussion in 'M² Mods' started by Mpgrimm2, Jan 30, 2019.

  1. Jordanp

    Jordanp Senior Member Military

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    @Mpgrimm2 i have a 2015 2500 diesel , with the 8.4 uas radio and 7 speed single zone mtc . What do i need to get Auto on my current setup ?
    Thanks
     
    Last edited: Feb 13, 2020
  2. Mpgrimm2

    Mpgrimm2 Senior Member Preferred Vendor Supporting Member Military

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  3. Jordanp

    Jordanp Senior Member Military

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    Thankyou
     
  4. Mordechai

    Mordechai Junior Member

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    Got this sorted out finally. All the wires where slotted properly, but there may be an issue with the terminal for the recirc door, or the pin on the module.
    After fidling with it a bit, and testing the pin with a voltmeter I was able to get all HVAC functions to work properly. Calibration test passed successfully.

    Thank you mpgrimm2, for retaining and consolidating all the information. Your posts and links have been a great resource.

    Total cost for me was relatively cheap
    RA4 2015=150
    Dual Zone Bezel=55
    HVAC module 2014=45
    Pins and such=40[​IMG]

    Sent from my ONEPLUS A6013 using Tapatalk
     
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  5. Jordanp

    Jordanp Senior Member Military

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    Got your cable thanks much , installed programmed to dual atc , right now I can’t change the up or down for hot or cold and no temp display on screen yet .
    When you say set to auto atc then wait “ does this take a while like maybe over night “ ?
    Thanks


    Sent from my iPhone using Tapatalk
     
  6. Mpgrimm2

    Mpgrimm2 Senior Member Preferred Vendor Supporting Member Military

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  7. Mpgrimm2

    Mpgrimm2 Senior Member Preferred Vendor Supporting Member Military

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  8. lilfoot

    lilfoot Junior Member

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    Just wanted to pass along a big thank you for provide such a detailed description of the 8.4 Uconnect upgrade.

    I just completed my upgrade from a Uconnect 5.0 and could not be happier.

    Thought I would share my experiences - I was originally looking for a radio in the local want ads but most of the ad posters did not have the donor VIN so I was concerned about getting an unlock code from the dealer so ended up getting my parts from a local auto wrecker for $750



      • 8.4 Uconnect RA3, factory Trailer Brake switch and controller from 2017 Ram 3500
      • Dual Zone Auto A/C controller, HVCA control unit and wire connectors from 2018 Ram 1500 (in fact they supplied the entire center bezel and complete dash wire harness)

    I was going to get all the components from the 3500 but found near the end of the forum that the 2500 and 3500 parts may not be compatible so the wrecker took the radio and trailer brake components from the 3500 but the rest came from the 2018 Ram 1500 that was almost all stripped out.

    I made my own wire harness but on my first attempt I ended up with a few problems so after re-ordering the female connector, pins and a new crimper the second attempt was much better.

    The only real problem I had was not being unable to find a local dealer who would get me the radio lock code - my own dealer included - so used one of the recommended vendors and paid to get an the unlock code.

    One item I forgot to mention - the RA3 radio I received did not have a cellular connector so no 911 bypass cable was needed.

    Thanks for sharing your knowledge.


    IMG_3070.JPG IMG_3092.JPG
     
    Last edited: Mar 21, 2020
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