Swapping OEM JBL Headunits 2010 to 2013 Premium

Discussion in 'Gen 3 Prius Audio and Electronics' started by Danger, Aug 19, 2016.

  1. Danger

    Danger Member

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    I was wondering if the 2013+ JBL Premium headunit that has GPS HDD can be swapped into the 2010 Prius with JBL sound system with GPS headunit, etc. The rears look different but as long as the wirings are the same it may work. Anyone have the wiring diagram for both headunits to compare. I know I can just buy an aftermarket head unit but I have seen a few of the 2013+ headunits at junk yards.
     
  2. Chi606

    Chi606 New Member

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    Well i know one thing is the newer units had HD tuners and our older cars don't have an HD antenna, so if you wanted the HD to work you'd need to grab an antenna too.
     
  3. ChapmanF

    ChapmanF Senior Member

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    There's a lot I still don't know, but you should see I've been gradually adding info on the other thread where you raised the question as I figure things out.

    I can't answer definitively about the HD until I'm far enough along to try it out, but I think the situation is sort of like this: yes, the facelift added HD decoding in the headunit. Yes, the facelift also added a second FM antenna on the right quarter window glass. I think those two changes are somewhat independent. The two-antenna ("diversity") configuration should improve FM reception overall, at least in dense places where you drive past buildings and obstructions that affect one antenna or the other but less often both at the same time. And improving overall FM reception should also improve the range at which you can effectively receive HD. But I would expect that even if you don't bother installing the window antenna and preamp, you'll still get HD AM and FM whenever the signal is picked up well enough by the original single antenna.

    -Chap
     
  4. Chi606

    Chi606 New Member

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    Very true, however my previous car was an Audi TDI with a diversity antenna. I installed one of the cheap head units from china which didn't support diversity and was just the single antenna, my reception degraded substantionally without diversity compared to my stock head unit. So yes, you can still get an HD radio signal, it won't be much better than normal FM unless you get a diversity setup.
     
  5. ChapmanF

    ChapmanF Senior Member

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    I guess the thing about HD (ideally, like any digital signal) is it will be uniformly great whenever it is strong enough to decode. Where it isn't, it will fall back and be no better than your analog reception (because it is your analog reception).

    And it'll be really annoying if you are right at the edge of strong enough and it keeps flipping in and out (at which point you'll probably use the on-screen setting to force analog only).

    -Chap
     
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