Correct wire harness ??

Discussion in 'Prius c Technical Discussion' started by Fastfret7, Sep 29, 2018.

  1. Fastfret7

    Fastfret7 Junior Member

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    F3DF2B8F-49E5-4ACA-A112-8AA897AD8226.jpeg DB0BAA84-5AC0-4960-A87A-02B705F94DBB.jpeg 28E7413A-C25C-4820-9893-BECDBFC23D90.jpeg

    Ok... I have a 2015 Pri C 3 and I purchased a wireless backup camera off eBay. When I went to install it, i found out there was a harness I needed to purchase that adds the yellow cable so I can hookup the camera. So, I did and went to install it.

    While installing, i noticed the harness (the only one the same size as this new one) has 4 pinned wires while the one in the instructions look to have 10-15 wires.

    Is this correct?

    How should I proceed?

    Please see pics

    Thank you for any assistance
     
  2. Elektroingenieur

    Elektroingenieur Senior Member

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    Could you post the make and model of camera and harness you bought (with links, if PriusChat will let you include them), a clear photo or scan of each page of the instructions, and clear photos of each connector, please?
     
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  3. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    Look closely. I think you are confusing your 24-pin connector with your 28-pin connector.
     
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  4. Fastfret7

    Fastfret7 Junior Member

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    Just counted.. the harness is a 24 pin
     
  5. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    yes, and the picture on the instructions page is showing the 28-pin connector.
     
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  6. Fastfret7

    Fastfret7 Junior Member

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    Thanks Elektroingenieur for jumping in.

    Ok. Below are the links and photos of the parts/instructions:

    Harness:
    NV-CAM-TY12
    https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F331908993205

    Wireless camera:
    https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F132524922782
    17AB8422-C6AD-423B-B12A-69A182380009.jpeg 641938FF-3E1C-4644-9B74-20832BB62E73.jpeg 0F6DD8F4-24C2-4842-BC63-6C0755161710.jpeg 476E9531-6FED-4325-826A-139EEA87F6AE.jpeg 0035F798-46DC-4261-9C64-F1CCE252600E.jpeg 70E826DE-760D-4FC3-8F6F-49CFD9B7DA78.jpeg

    Again... thank you for your help!!
     
  7. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    It sounds like you might be getting hung up on the camera power line- that's understandable because it is weird.

    When you switch to reverse, one of the wires on the 28-pin harness goes to +12v. The stereo switches to camera view, then forwards a regulated 6v out on the 24-pin harness lines to power the camera.

    It looks to me like you need to use your new harness to adapt the wireless receiver video signal into the 24-pin harness and trim off the 6v power wires, don't use them. Then take a tap of the 12v reverse select line on the 28-pin harness and feed that to the power input of the wireless receiver. I think it would be safe to also jump that to the native camera line going to the back of the car for the wireless transmitter.
     
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  8. Fastfret7

    Fastfret7 Junior Member

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    You are correct... that Fig 1 is if I needed to add the reverse switch pin.

    This looks like the only place I can go with the 24 pin
     
  9. Fastfret7

    Fastfret7 Junior Member

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    Above I just posted a photo of all the parts and instructions.

    Thank you for your help
     
  10. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    Yeah I looked through the instructions you posted and it looks like it will work fine using the guidance in my previous post.

    EDIT:

    You could maybe simplify things just by using any 12v source for the wireless xmit & receive. Then all you're doing with that 24-pin adapter is connecting it to the wireless receiver (RCA) and plug the 24-pin into your stereo IN PLACE OF the native connector, and leave the native one loose. Put tape over the head to prevent contact & rattles. The difference is that your camera would be broadcasting pictures all the time, and the receiver turning it back into video all the time- but the stereo would ignore the picture until you actually switch into reverse.
     
    #10 Leadfoot J. McCoalroller, Sep 30, 2018
    Last edited: Sep 30, 2018
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  11. Fastfret7

    Fastfret7 Junior Member

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    Great.. thank you!

    Just confirming that I’m not using the red and black wire on the front wireless unit, just plugging in the 24 harness? (See below)

    The reason I’m asking is cause I thought I need 12v to power the camera instead of 6v.

    Oh and finally, any suggestions on what wire (color/location) I should be tapping into in the rear/tailgate to power the rear wireless camera part?
     
  12. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    You need to supply power to the wireless receiver somehow- its red and black wires need to connect to 12v somewhere. It's up to you whether you tap it from the accessory power to the stereo, or from the switched 12v reverse select wire, or some other source.

    You definitely don't want to use the power lines coming out of your new 24-pin harness, as that will be 6v intended for an OE camera.

    I've never had the tailgate apart, not sure what you'll find back there.

    To say it another way: the only reason you are using that new 24-pin harness is to connect the video + and video ground wires, just two wires. You're just using this to adapt the RCA to a 24-pin shell. The power lines coming out of that 24-pin are worthless to you, clip them, cap them off and make sure they can't short. You'll still need to supply 12v to the receiver, and the 24-pin kit has nothing to do with this.
     
  13. Avi's Advanced Automotive

    Avi's Advanced Automotive Independent hybrid repair shop

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    Why not power it off of the reverse lights?

    Posted via the PriusChat mobile app.
     
  14. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    I guess you could, but that might complicate things since the reverse lights are not in the tailgate where the camera is (presumably) going.
     
  15. TAwesome

    TAwesome Junior Member

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    I have a 2004 Prius with navigation and I have a 2006 screen mfd I need to use in my 04 I really don’t want to change out wiring harnesses idk how to fix it because the fpc ribbon doesn’t reach so can I just get a extender piece or what do y’all think
     
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