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Cadillac ATS Technical Discussion Forum Discussion, LED license plate and reverse lights in Cadillac ATS Discussion Forums; Originally Posted by Bryce2.0T These are all T10? Yes, they're all T10, with the exception of the visor mirrors. They ...
  1. #31
    Kalibr's Avatar
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    Re: LED license plate and reverse lights

    Quote Originally Posted by Bryce2.0T View Post
    These are all T10?
    Yes, they're all T10, with the exception of the visor mirrors. They take 29mm fuse style bulbs as in pic.
    medium_d206afae-8e77-90c2.jpg

  2. #32
    JSD13 is offline Cadillac Owners Fanatic
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    Re: LED license plate and reverse lights

    Pics of reverse and plate lights?

  3. #33
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    Re: LED license plate and reverse lights

    License plate bulbs take the same T10 wedge style and the reverse lights take two 921 style LED's. Reverse lights are extremely easy as well. Lay under the back bumper, look up where the reverse light housing is, where the harness meets the bulb retainer you twist to release, replace the bulb with the LED one, and turn back into place. The license plate covers pop out with a small/jewelers flat tip screw driver.


    921 Style Bulb:


  4. #34
    Kalibr's Avatar
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    Re: LED license plate and reverse lights

    Quote Originally Posted by JSD13 View Post
    Pics of reverse and plate lights?
    I posted these earlier. Check out post #4.

  5. #35
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    GJB
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    Re: LED license plate and reverse lights

    Quote Originally Posted by Kalibr View Post
    I posted these earlier. Check out post #4.
    Your post shows the T10 style so I'm confused by bucky84 referencing the 921 style?

  6. #36
    JSD13 is offline Cadillac Owners Fanatic
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    Re: LED license plate and reverse lights

    Quote Originally Posted by Kalibr View Post
    I posted these earlier. Check out post #4.
    Looking for 'after' installed pics.

  7. #37
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    Re: LED license plate and reverse lights

    I'll post an after once it gets dark enough lol

  8. #38
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    Re: LED license plate and reverse lights

    Not great photos (taken from phone), but you get the jist of it. Photos also don't do them justice, they're certainly bright and look great though!





  9. #39
    JLGT is offline Cadillac Owners Fanatic
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    Re: LED license plate and reverse lights

    Where did you buy these from? Are they pure white, no blue tint?

  10. #40
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    Re: LED license plate and reverse lights

    Going to replace my reverseing lights with LEDs. But first two clatification questions:

    1. Are there any error reading problems to be aware of? That is does it make a difference whether or not I get canbus or non-canbus DRLs?
    2. Planning on getting white LEDs (around 5000K) and have seen that the reversing LEDs come in 9-13+ diode configurations. I'm not looking to light up the whole block, but do want "good" rear lighting (without a ton of glare) when backing up. So, what's a good number of diodes to look for?

  11. #41
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    Re: LED license plate and reverse lights

    Mine are 25 smd with no glare on the back up camera. They give off great light which is good since our reverse light sits at a nontraditional position.

  12. #42
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    Re: LED license plate and reverse lights

    Has anyone had any issues with hyperflashing as a result of swapping out the halogen bulbs for LED?

    I updated a 2004 Corvette with all new LED and HID lighting and as a result, I had to install a hyper-flash harness in order to trick the car brain that there was no burnt out halogen bulb due the lighter LED electrical load.

  13. #43
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    Re: LED license plate and reverse lights

    No issue with that for me so far

  14. #44
    listrats is offline Cadillac Owners Fanatic
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    Re: LED license plate and reverse lights

    Quote Originally Posted by MSG C5 View Post
    Has anyone had any issues with hyperflashing as a result of swapping out the halogen bulbs for LED?

    I updated a 2004 Corvette with all new LED and HID lighting and as a result, I had to install a hyper-flash harness in order to trick the car brain that there was no burnt out halogen bulb due the lighter LED electrical load.

    CANBUS bulbs?

  15. #45
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    Re: LED license plate and reverse lights

    Got the same inquiry here: Should one get can-bus reverse LEDs? Low voltage bulbs can falsely set off an error code. Can-bus bulbs are error setting free.

    Furthermore, I've been looking at 13-LED bulbs, can-bus, and the pricing range is wild: From around $2-3 to $20/bulb. How is one supposed to judge the bulbs' quality???

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