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Speaker Wiring

Discussion in 'Gen 3 Prius Main Forum' started by Borninblue, Dec 29, 2018.

  1. Borninblue

    Borninblue Active Member

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    Not sure what the problem is. I replaced my radio with a new unit and utilized the correct aftermarket harness.

    For whatever reason every speaker works except the driver side door. Does anyone know if there is a specific color wire in the harness for the driver side door? I know you will ask was it working before I put in the new unit and I honestly can say I never paid close attention because the audio was so poor. Now I noticed it with the increased amplification with the new unit.

    I did soldering on every wire very carefully so I don’t think the problem is there, plus I would imagine the front driver side speaker is also the same wire as the door? I could be wrong there.

    Wish I had a spare speaker to take off door panel and test the connection, any suggestions?
     
  2. bisco

    bisco cookie crumbler

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    would switching wires be too much of a pain?
     
  3. Borninblue

    Borninblue Active Member

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    Wires are soldered together so would have to take out dash again to get to harness and cut connections. Not sure if that’s what you mean by switching wires. I’m thinking I could take off both door panels and switch speakers maybe? I honestly don’t believe it can be a connection with the harness. I guess it’s possible harness could be bad though.
     
  4. bisco

    bisco cookie crumbler

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    agreed, or the h/u. i would start with whatever is easiest
     
  5. Borninblue

    Borninblue Active Member

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    Anyone have a wiring diagram where it tells me which color wire controls each speaker?
     
  6. frodoz737

    frodoz737 Top Wrench

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    This should help. It's the 2010 Prius II base stereo system factory wiring diagram.
     

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    #6 frodoz737, Dec 29, 2018
    Last edited: Dec 29, 2018
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  7. Mendel Leisk

    Mendel Leisk Senior Member

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    More info, hopefully you can heads/tails out of it:
     

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  8. Borninblue

    Borninblue Active Member

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    Thank you...I’m trying to decifier which one is the driver door in that diagram.
     
  9. frodoz737

    frodoz737 Top Wrench

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    Better? Sorry, the first was an old copied file.
     

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  10. Borninblue

    Borninblue Active Member

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    Much better! Does it look like driver side door is the pink wire?
     
  11. frodoz737

    frodoz737 Top Wrench

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    Pg. 2 pink and violet.
     
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  12. frodoz737

    frodoz737 Top Wrench

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    Is the dash speaker on that side is working?
     
  13. Borninblue

    Borninblue Active Member

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    Yes the dash speaker is working on that side. The driver side door is only speaker not working in the vehicle.
     
  14. Borninblue

    Borninblue Active Member

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    If there is a break somewhere in the line could I use regular +\- speaker wire and route that to the radio?
     
  15. frodoz737

    frodoz737 Top Wrench

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    Then it's not your solder job or adapter harness. Check wiring continuity from the dash speaker to the door speaker. If all is good then it's likely the door speaker.
     
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  16. frodoz737

    frodoz737 Top Wrench

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    They use metric wire gauge but 20 gauge will work if you didn't add an amp. Remember larger is OK, smaller is not...and you should solder in (or pigtail the two going to the door only) at the blocking diode on the dash speaker...if that's what it is. Ring it out first to make sure. The speaker is still the weakest link though, because it's just paper cone junk.
     
    #16 frodoz737, Dec 29, 2018
    Last edited: Dec 29, 2018
  17. Borninblue

    Borninblue Active Member

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    Thank you for that information! If I can ask how you came to that conclusion? I am assuming they share the same circuit?
     
  18. Borninblue

    Borninblue Active Member

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    OK-I started to dig around and found something on my floorboard. I recently had remote start installed and they were obviously digging around on driver side panels. Please see the attached photo, I have no idea what this connector is or where it belongs.
     

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  19. frodoz737

    frodoz737 Top Wrench

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    Don't know about the installers leftovers, but it's not the wire going to your door speaker. If you look back at page 2, you see how the dash and door appear to be wired in parallel. 2 wires are soldered to "each" terminal on the dash speaker/diode. One each from the HU and one each going to the door. Correction on earlier, there are two connectors between...L11 and OL2...with the respective pin numbers per both as identified on page 2 and 10 of the file. I believe one is the door plug, don't know where the other is.
     
    #19 frodoz737, Dec 29, 2018
    Last edited: Dec 29, 2018
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  20. frodoz737

    frodoz737 Top Wrench

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    Important...Power down and pull your negative battery terminal before unplugging anything. As to your question about my conclusion, I'm avionics/electrical plus I had my 2010 II system totally replaced and customized. Left "old" wiring in place to restore to factory before selling...which I did. Click on my name and look at my media.
     
    #20 frodoz737, Dec 29, 2018
    Last edited: Dec 29, 2018
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