Quad Tail Lights? How-To Inside - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2006 - 2009 TrailBlazer SS Tech > 06-09 SS Appearance > Exterior

Exterior Exterior repairs/modifications

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  #1  
Old 01-05-2009, 09:57 PM
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SportinLS2 SportinLS2 is offline
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Question Quad Tail Lights? How-To Inside

I was wondering if anyone has experimented with the curcuit boards in our taillight assemblies?

I had mine apart to replace a bulb and noticed ALL three sockets contain 3157 DOUBLE filament bulbs even though the top (brake/tail) in the only bulb that ever has both filiments powered.

The center bulb only uses the "bright" filament for turn signals and the bottom only uses the "bright" filament for back-up lights.

I was hoping someone with some electrical know-how might be able figure out how to make the center reflector (turn signal) also illuminate the "dim" filament to illuminate both red reflectors on each side to produce quad tails and leave the factory "bright" filament signal flash behavor of the center reflector.

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Old 01-05-2009, 11:04 PM
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PANGGOY PANGGOY is offline
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i tried this one before but after a few trial and errors i gave up.

i hope someone can figure this one out. i like the look of quad tail lights too
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  #3  
Old 01-07-2009, 07:28 AM
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Originally Posted by PANGGOY View Post
i tried this one before but after a few trial and errors i gave up.

i hope someone can figure this one out. i like the look of quad tail lights too
I've done it to mine. Its really pretty easy to do, but you will need to crack open the curcuit board to do it and then just run a couple of jumper wires. I did have to get another set of curcuit boards to rob a couple of parts out of them.

Now that I think about it, it took quite a bit of time to do, but it was worth it.

<"(((><

Scott
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Old 01-07-2009, 07:30 AM
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I've done it to mine. Its really pretty easy to do, but you will need to crack open the curcuit board to do it and then just run a couple of jumper wires. I did have to get another set of curcuit boards to rob a couple of parts out of them.

Now that I think about it, it took quite a bit of time to do, but it was worth it.

<"(((><

Scott
Details? Info? Pictures? YOU DID THIS???!!!!

If you can make a how-to that would be great!

Chris
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Old 01-07-2009, 03:55 PM
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Details? Info? Pictures? YOU DID THIS???!!!!

If you can make a how-to that would be great!

Chris
I did it a long time ago and I didn't take any pics, but I'll see if I still have the old parts laying around here and if I do, then I'll try to put something together for you. It will take some time for me to do this, but keep after me and I'll get it done. You'll need a spare curcuit board to rob a couple of part out of. I've seen them on ebay for just a few $$$. See if you can get at least one of them for the mod!

<"(((><

Scott
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  #6  
Old 01-07-2009, 04:17 PM
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Nice mod I'd like to try...
Where is what does circutboard look like. I had my tail off yesterday briefly but all I noticed was a single plug. Im guessing the board is buried under the plastic, and you have to break it What part should I look for on ebay?
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Old 01-07-2009, 07:04 PM
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Nice mod I'd like to try...
Where is what does circutboard look like. I had my tail off yesterday briefly but all I noticed was a single plug. Im guessing the board is buried under the plastic, and you have to break it What part should I look for on ebay?
The curcuit board is the part that the three light bulbs are in that screws to the back of the taillight. You will need to split it open to do the mod and then just glue it back together.

I just went to ebay and typed in "trailblazer taillight curcuit board" and they came up.

<"(((><

Scott
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Old 01-07-2009, 08:11 PM
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I thought that might be the case, so I already have one on the way just to peek inside.

You sure could save me some re-invention if you can remember what to do!

Drop me a reply if you need me to post a picture of a cracked open circuit board when my spare arrives. I really wouldn't want to see you break yours open trying to refresh your memory.

Also very nice to know this mod has some service life supporting it to be safe on the electrical system.

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Old 01-07-2009, 08:27 PM
Stoli Stoli is offline
 
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Do you have any pictures of the tail lights at night?
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  #10  
Old 01-07-2009, 08:48 PM
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Yea i want to see some pictures of these bad boys in action too.

Here are some pics of a circuit board i took apart (from my 02TB)

The board went bad, had to replace it. Then used a flat head screw driver to pry it open. Real simple.

Here are some pics of my board



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