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2004 CTS-V
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Discussion Starter #1
Has anyone done this or know how to install one on a V?
On older cars you could just put a switch in line on the positve wire of the brakelight sensor near the pedal to interrupt the circuit.
I think the V uses multiplexed wires doesn't it?
Is it possible to install a switch that wouldn't interfere with other systems?
I looked under the footwell to see where the wires are but it is VERY tight in there. I couldn't even find the wires.
Thanks for any help in doing this.
 

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FAQ is your Friend
CTS-V
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You actually could do it (though I dont understand why) but I cannot garantee what I am suggesting will work.

Attached is the brake light schematic.. You could basically put a relay between the white wire after it comes out of the left rear fuse block and activate that with a switch from the front of the car..

THERE MAY BE SIDE EFFECTS.. I dont know... maybe this schematic will help.


Reed
 

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OK, I gotta ask: unless you are planning on evading police, secretly stalking neighborhoods at night, or causing traffic accidents, why would you want to do this?
 

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2005 Stealth Gray CTS-V, 2009 Black CTS-V
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6104696 said:
OK, I gotta ask: unless you are planning on evading police, secretly stalking neighborhoods at night, or causing traffic accidents, why would you want to do this?
LOL--exactly
 

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bracket racing a CTS-V with our wheel hop and our shifter? Can't be! I think he wants to run 'shine down south......

Or....maybe he works for one of the movie studios and he is modding a V for a chase scene in the next MATRIX flick.....
 

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Discussion Starter #11 (Edited)
6104696 said:
OK, I gotta ask: unless you are planning on evading police, secretly stalking neighborhoods at night, or causing traffic accidents, why would you want to do this?
I would never do this of course, but ... I once knew someone liked to drive fast at night on lonely highways with extremely light traffic and no one in the lane behind him. During those circumstances ONLY, this person would, for brief periods of time, disable the brake light so that if he was hit by radar and had really fast reaction time, would not alert the radar operator that he was using a radar detector by lighting up his brake lights like a Christmas tree. If the radar operator sees a driver is slightly over the limit but does not overtly react to the radar targeting, they will frequently let the driver go. Conversely, if it is apparent to the radar operator that the driver is speeding and has a radar detector and is trying to evade detection, he is much more likely to pursue the driver. I realize this sounds hard to believe, but I have seen it work on more occasions than I can count. Basically, if the driver is very fast but also very smooth on the brakes and isn't going too far over the limit, he can get down to a speed that may be somewhat over the limit but is less than the radar operator deems to be worth pursuing.

Please do not flame me with 1) Admonishments that this is an unsafe practice and 2) No one has reaction times that fast: It does work on many, but not all radar encounters. It also is useful for non-radar encounters when trying to be somewhat inconspicous. For example a driver blows by a parked patrol car, and realizes it while going by. If the lights are off and the driver is smooth while braking, often the patrol car will elect not to pursue.

Obviously the use of something like this requires a driver to be hyper-disciplined in making certain to turn the switch back on when entering even light traffic. Otherwise a car approacing from the rear could get too close for comfort or worse. Ten years ago there was even a company that made a brake light kill switch that would kill the light for one brake application only, then automatically would reset to turn it back on. This would require constant hitting of the switch but it was a useful safety feature. Haven't seen this offered lately.

I'm not advocating that anyone do this, In fact PLEASE DON'T USE ONE.
I just thought I would respond to the question.
 

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To do it right, you need to also be able to kill all the tail lights, including the brakes. That way you can leave your headlights on and be stealth from the rear. Not that I would ever do anything like that...
 

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I thought you were going to use it to cheat in bracket racing. Dial in at a slower time than your car can run, then hit the brakes at the end of the track until you're just barely ahead of the other driver. If the track operator sees excessive braking you will be disqualified. So there's your other (legal but against the rules) use for the switch.
 

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In Virginia, where radar detectors are illegal, you better believe the man will pull over the car that taps his brake lights when hit by radar from the rear.

Back in the day, a good friend of mine, not me, was flying down the highway, I believe on 85 headed to Atlanta at a high rate of speed when hit from behind by a state trooper sitting on an entrance ramp. During the day.

My friend had the above kill switch set-up. However, the trooper immediately asked for his illegal radar detector. My friend asked, "why officer would you think I was using a radar detector?" The man said, "well, I didn't see your brake lights but I swore I saw smoke coming off your tires!"

True story.

CG
99STS 120K
 

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Discussion Starter #19
ctsvett said:
You actually could do it (though I dont understand why) but I cannot garantee what I am suggesting will work.
Attached is the brake light schematic.. You could basically put a relay between the white wire after it comes out of the left rear fuse block and activate that with a switch from the front of the car..
THERE MAY BE SIDE EFFECTS.. I dont know... maybe this schematic will help.
Reed
Thank you much Reed!
 

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'05 CTS-V, '12 CTS-V Manny Vagon
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In my old Cherokee, I would just slightly pull up the hand brake, to slow down, if the po-po was behind. This didn't illuminate the tail lights. I don't think modern cars will illuminate with just the e-brake, but I could be wrong. To bad our e-brake is just like your grandfather's Cadillac.

-Chris
 
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