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  1. #1
    Good Citizen
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    Sep 2005
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    Default Brake light cutoff switch?

    Has anyone done one of these ever? Basically thinking of using one of the random buttons on my steering wheel that I don't use (like the stock stereo controls) to send a signal to a relay that disables the brake lights when I'm holding that button?

    During all normal driving (and power off), the relay defaults to brake lights enabled. But when power comes from that one button, the brake lights are disabled. And since it uses a stock button, it's not like anybody is going to be able to know it's there.

    This way, when you get hit with radar or laser and hit your brakes, the cops don't know (other than if you dip) that you're hitting your brakes.

    I've had a buddy with his V1 driving down the road at night, about 80 in a 65 zone (or maybe 70 zone, I dunno...) and a cop came up behind him and was pacing him a little bit. He flipped his radar on then back off, and my buddy hit tapped brakes a little bit. He turned it back on then off again and he hits his brakes. Pulls him over (at the speed he paced him at) and says "hey, how's it going... where's the radar detector?" He ended up getting off of the ticket, but still it might be a nice thing to be able to do, disabling the lights for a second, you know?

  2. #2
    Advanced Member
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    Default

    good ideea in theory but what i usually do in that situation i know i am screwed so i don't jam on the brakes when i get a full blast of instant on, Especially if he is behind me! If he is infront of me and is visible i jam on the brakes cause then it looks like i just saw him and slowed down. If he comes up from the rear, I just flip off my cruise control and coast down or it i was going a high speed i down shift

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  3. #3
    Yoda of Radar
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    Default

    I've thought about that. But I have no room for switches on my dash, maybe that air conditioning switch will have to go

    It would be an interesting idea. All you really need is a switch on the line from the brake switch, when you depress it it breaks the line and the lights remain off.

  4. #4
    Newcomer
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    Aug 2005
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    MA
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    Default

    If there's anyone behind you, you could start a major chain collision...if it's a cop, you could get a major ticket...at best you'd have to be very careful about when and how you used such a cut-out.

  5. #5
    Professional
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    Yeah, don't tamper with the brake lights. If you notice a cop pacing you or get an instant-on hit (or any hit, for that matter), just let off the gas and coast down in speed. You'll slow down quite a bit fairly quickly, and there isn't the obvious brake light or dipped nose. Slamming your brakes right in front of a cop will lead to (at least) a hefty ticket, or possibly a police car in your trunk, and a very angry officer.

    No radar detector in the world will save you if you act like a madman every time it goes off.

  6. #6
    Good Citizen
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    Jul 2005
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    Elkhart, IN
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    Default

    The cops can turn off their rear brake lights too. I used to make the switch panels for the cars where one of the switches were labled for that use.. I followed one once that had forgotten to turn his back on. When he stopped I pulled up next to him and mentioned he ought to get those brake lights fixed. I saw him reach down and flip a switch before I pulled off.

    It's likely that your steering wheel controls are multiplexed through 2 wires so unless you can find the output from the computer you are probably out of luck using that. I would go with a large floor mounted momentary push switch that you could hit with your left foot. I did the same thing years ago to run my wipers instead of paying for an intermittant wiper controller. I would, however for brake lights use a normally closed relay to feed the brake wires thru. That way if there were any failure in the system there would be a 99.9% chance that your brake lights would continue to work.

  7. #7
    Good Citizen
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    Default

    Quote Originally Posted by SmaartAasSaabr
    I've thought about that. But I have no room for switches on my dash, maybe that air conditioning switch will have to go

    It would be an interesting idea. All you really need is a switch on the line from the brake switch, when you depress it it breaks the line and the lights remain off.
    Man you sound like an RX-7 owner... I bet more than 50% of RX-7's out there have had their A/C removed (for weight/complexity/ease of working reasons).

    And yeah, a relay direct from the signal on the brake pedal switch. Of course, this same line also controls a number of other things, including getting the car out of park...

  8. #8
    Good Citizen
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    Quote Originally Posted by bcorby
    Yeah, don't tamper with the brake lights. If you notice a cop pacing you or get an instant-on hit (or any hit, for that matter), just let off the gas and coast down in speed. You'll slow down quite a bit fairly quickly, and there isn't the obvious brake light or dipped nose. Slamming your brakes right in front of a cop will lead to (at least) a hefty ticket, or possibly a police car in your trunk, and a very angry officer.

    No radar detector in the world will save you if you act like a madman every time it goes off.
    Nobody's talking about slamming on the brakes with cars behind.

    And I'd just get off the gas to slow down (usually do), but we drive automatic transmission cars, these suckers coast for EVER before they slow down compared to every other (manual) car I've ever driven. At least I have the sport shift, that helps a little.

  9. #9
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    Really? I've got a Corolla with AT and it slows down quickly when I let off the gas.

    Could just be that it's vastly underpowered, but hey, I'm in college. Power = gas = money I don't have yet.

  10. #10
    Old Timer
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    I think the weight of the car is more of a factor in deceleration than the transmission type. Corollas are light, so they slow down quicker than say, an Accord.
    If I'm passing you on the right, YOU are in the wrong lane!

    If speed kills, how come I'm still alive?

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