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Back Up Camera Wires in A-Pilar - Help

Discussion in 'Audio & Video' started by Les7311, Jan 5, 2018.

  1. Jan 5, 2018 at 3:28 PM
    #1
    Les7311

    Les7311 [OP] Look up, what do you see

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    Scroll down.....the solution is wihtin my post...

    IMG_2528.jpg IMG_2628.jpg


    Surgery done but I cannot get a signal to deck when put in reverse....I followed the directions as shown in the video for this deck. The pic above shows the type of RCA wire I am using.

    Go to 7:20

    https://www.youtube.com/watch?v=6Wxv9bWmN-M

    My connection is:
    Silver RCA wire to Red in Pillar A (as shown in video)
    Black RCA wire to Black n White in Pillar A (as shown in video)
    Then I plug the RCA into the "Camera" RCA back of radio

    The from Green in Pillar A, I have one single wire going to Radio "Reverse"


    What am I missing?? 2008, SR5, 4x4
     

    Attached Files:

    Last edited: Jan 6, 2018
  2. Jan 5, 2018 at 8:01 PM
    #2
    ninjajay

    ninjajay Posting from the toilet

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    do you have the factory camera or aftermarket? I had the exact same problem with my Rostra camera and never got it to work, even though the Rostra was hooked up via the factory pre-wired plug and went to an OEM roof console screen
     
  3. Jan 5, 2018 at 8:09 PM
    #3
    Les7311

    Les7311 [OP] Look up, what do you see

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    I have the Rostra camera, so yes, same problem.

    It worked well with the rearview monitor as I bought the kit.

    Plugged up the rearview and it also now doesn’t work.

    Fuses all seems to work

    Any thoughts?
     
  4. Jan 5, 2018 at 8:13 PM
    #4
    ninjajay

    ninjajay Posting from the toilet

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    Did you do a 6v step down for camera voltage? Most HU's are 12v while the Toyota OEM camera is supposed to be 6v. I suspect the Rostra cam is different from the OEM camera in some way, whether it's a 12v being stepped down to 6v, or it's just enough signal for the OEM screen, but not enough for something that gets converted. I never bothered to take my multimeter to it, though.
     
  5. Jan 5, 2018 at 8:33 PM
    #5
    Les7311

    Les7311 [OP] Look up, what do you see

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    I followed the video instructions and didn’t apply no step up or down as I wouldn’t know where to start ( not that electrical inclined

    My radio tech two weeks back, tapped into the rear plug (by spare) with a self made camera, and it worked.

    Then Plugged up tailgate camera nothing!!!

    Will he need to step down voltage to rear camera?

    Also do you have the same head unit?
     
  6. Jan 5, 2018 at 8:35 PM
    #6
    ninjajay

    ninjajay Posting from the toilet

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    I suspect he does need to step down from 12v to 6v. I had a Pioneer 4200NEX so it was a different HU. I believe the power is supplied to the camera through the screen in the roof console, and if you're moving it to the headunit, the headunit will now be supplying the power. To the factory camera it needs to be 6v. I bet if you disconnect the headunit and just try the backup camera with factory screen it will start working again.
     
  7. Jan 5, 2018 at 8:39 PM
    #7
    Les7311

    Les7311 [OP] Look up, what do you see

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    Is this something I can do.... make stepdown?

    Have appointment with him tomorrow morning in 15 degree cold weather.....and dread if I can avoid plus spending $$$$

    I do want the HU view vs rearview mireor
     
  8. Jan 5, 2018 at 8:41 PM
    #8
    Les7311

    Les7311 [OP] Look up, what do you see

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    One more..

    If the HU send 12v to the tailgate, but it only need 6v, could this damage the tail camera?
     
  9. Jan 5, 2018 at 8:42 PM
    #9
    ninjajay

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    Les7311[OP] likes this.
  10. Jan 5, 2018 at 8:45 PM
    #10
    Les7311

    Les7311 [OP] Look up, what do you see

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    Any thoughts on that last question about damaging camera....?
     
  11. Jan 5, 2018 at 8:47 PM
    #11
    ninjajay

    ninjajay Posting from the toilet

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    allegedly it COULD, but if you're just turning it on to see if it works and then turning it back off you're probably OK
     
  12. Jan 5, 2018 at 8:57 PM
    #12
    Les7311

    Les7311 [OP] Look up, what do you see

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    The replacement Rostra came so I plug into harness, hit reverse twice then
    “....cussed like a broke pirate with his last dollar...”
    Nothing!!!
     
  13. Jan 6, 2018 at 3:21 PM
    #13
    Les7311

    Les7311 [OP] Look up, what do you see

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    So here’s the update
    From Pilar A we had to tap into almost every wire to find the color to the harness by the spare.

    Alas, we found them almost two hours later, but still no signal to HU

    Tried again, but next round with HU all plugged up, no signal

    Long story short, unless you want to hear all 5 hours of testing, solution:

    - tap into reverse light from tailgate, and run wire to harness by spare.

    Conclusion: the rearview monitor sends the signal to he camera. If you don’t have a rearview Mirror plugged up, no signal is sent to the camera.

    The RCA positive is run to the Red in Pillar A
    The RCA negative is run to the black and white stripe in pillar A
    Then plug into back of HU

    The green wire in pillar A is the Reverse signal. tapped and run to the back of HU “Reverse”

    951D4162-257A-401F-A96A-8A931A413B5A.jpg 4D91C9DF-E4A9-4E7C-8858-2BFAAC9DFEC1.jpg
     
  14. Jun 16, 2019 at 1:42 PM
    #14
    Jy8466

    Jy8466 New Member

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    having the same problem with the same head unit, I have a 12' tundra do you think its the same signal wires for my 12' tundra,...?
     
  15. Jun 16, 2019 at 3:45 PM
    #15
    Les7311

    Les7311 [OP] Look up, what do you see

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    Probably and almost certain.
    My technician found the signal at the reverse light at tailgate.

    He ran wires from there to the tailgate camera No problem since.

    Cannot say why the signal not picked up from the A Pilar......
     
  16. Jun 17, 2019 at 6:32 AM
    #16
    Jy8466

    Jy8466 New Member

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    Okay,.. I tried to find the signal from the mirror camera with no luck I did fine the one 6v positive wire, but all others were 3v, ok will try that,...

    Thanks,...
     
  17. Jul 3, 2019 at 3:36 AM
    #17
    Jy8466

    Jy8466 New Member

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    Awesome you nailed it followed ur post now I have my back up camera working,.. and I didn't have to tap into the rear tail light signal not saying that's not a way too go as well,..

    I have another question since I have the same Head unit,..

    Did you get ur AUX & USB port to work with your the head unit, if so HOW did you do it,..?

    Another problem with Tundra wiring system, thank you for ur insight and will need to share,...!!!
     
  18. Jul 3, 2019 at 10:41 AM
    #18
    Les7311

    Les7311 [OP] Look up, what do you see

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    The HU came with its own USB. I used one of the dummy switch to secure, while the sun plugged directly into HU.

    The harness may carry signal - I didn’t check.

    Will try next time am in truck
     

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