3rd brake light
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Cadillac CTS First Generation Forum - 2003 - 2007 Discussion, 3rd brake light in Cadillac CTS Coupe, Sport Sedan and Sport Wagon Forums; Im new to this forum, unlike the corvette fourm i belong to, this forum is very much alive and you ...
  1. #1
    Crossflag is offline Cadillac Owners Member
    Automobile(s): 04 cts
    Join Date
    Feb 2014
    Posts
    9

    3rd brake light

    Im new to this forum, unlike the corvette fourm i belong to, this forum is very much alive and you dont have to kiss azz to get an answer.
    I joined here to find out the fix for the non working 3rd brake light and read how to take the light apart and replace the neon bulbs with led lights. I did this over the weekend and everything went well. After removing the light it took me about 6 hours to get the light apart. I used a hair drier to apply heat a razor knife to cut through the glue that was exposed and screwdrivers to carefully pry it apart. that was the only part of the job that was hard. the neon bulbs were easily removed and i used the reflective cradle the bulbs were in to apply the led strips. I cut the wires to the ballist and tucked the two wires that were not needed and soudered the + - to the new led wires. looks and works great. Thanks to this forum I saved alota $$$:
    Tlorenzen and Ikera like this.

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  3. #2
    Tlorenzen is offline Cadillac Owners Connoisseur
    Automobile(s): 06RedCTS3.6Lux;V Exhaust,Tint,Rx-CAI-Can-Ice,AuxJack
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    Jan 2011
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    Melbourne, FL (School)
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    Re: 3rd brake light

    I have also done this, only I just used my oven. I forget the temp I used the but hotter the easier it is to get apart...just don't want to get to hot you start melting things The LED's do look nice also. Think my total cost was $12 compared to the $700 the dealership wanted for a new one.

    Also, welcome to the forums!

  4. #3
    Blayne's Avatar
    Blayne is offline Cadillac Owners Connoisseur
    Automobile(s): 2006 CTS sport model/package
    Join Date
    Sep 2012
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    Sudbury, Ontario Canada
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    1,058
    Does this seem to happen to certain year cars or is it totally random? Like was there a difference between any of the year? Just curious if I should do this before it happens and while my car is sleeping in the garage for the rest of the winter.

  5. #4
    Sammy Z's Avatar
    Sammy Z is offline Cadillac Owners Connoisseur
    Automobile(s): CTS 03
    Join Date
    Jan 2008
    Location
    Chicago, IL
    Posts
    1,759

    Re: 3rd brake light

    It just happens with age, sometimes water gets in there and corodes the connectors.

    I opened mine by using a Dremil tool around the wholw assembly. Glued it back with silicon sealer.

  6. #5
    Crossflag is offline Cadillac Owners Member
    Automobile(s): 04 cts
    Join Date
    Feb 2014
    Posts
    9

    Re: 3rd brake light

    Quote Originally Posted by Blayne View Post
    Does this seem to happen to certain year cars or is it totally random? Like was there a difference between any of the year? Just curious if I should do this before it happens and while my car is sleeping in the garage for the rest of the winter.
    Im sure someone here can tell you the year they stoped using the neon bulbs but i wouldnt doing this till you have to. Look at your light closely and see if you can see any mosture or water bubbles on the inside of the light. If you do it wont be long till it fails.

  7. #6
    Andrew Volpe is offline Cadillac Owners Member
    Automobile(s): black 2004 CTS
    Join Date
    Aug 2013
    Location
    Boston MA
    Age
    21
    Posts
    29

    Re: 3rd brake light

    Hey I have had this issue for about 2 and a half years now, and i never got around to fixing it, but the thread that i saw with all of the instructions is gone/i cannot seem to find it. Can you guys point me in the right direction?
    thanks

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