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Thread: 3rd brake light

  1. #1
    Join Date
    Apr 2015
    Location
    philadelphiaish
    Posts
    39

    Default 3rd brake light

    I'm planning to put a third brake light on my roll bar to slightly reduce the chance of a soccer mom rolling over me in a 6000 lb. suv.

    My car is an '87 so I don't have connectors for the tail lights so my plan was to get a 12" LED light bar and just tap into the wiring going to either the left or right tail lights. Seem like a sound plan or would I be better off running dedicated wiring from the brake light switch?

    The list of little things this car needs never seems to get any shorter.
    '87 Caterham Cosworth BDR 1700 "HPC Spec"

  2. #2
    Join Date
    Jul 2009
    Location
    Arkansas and . . .
    Posts
    3,109

    Default

    Tap into an existing brake light wire...easiest course of action.
    Last edited by xcarguy; 05-07-2018 at 02:12 PM.
    Stalker V8, chassis #85

    Stalker Chassis #85 Build Gallery
    Stalker Chassis #85 Owner Thread

    Get up in the morning and give the day your very best. You donít get it back.

  3. #3
    Join Date
    Jan 2006
    Location
    Seattle-ish
    Posts
    1,084

    Default

    More effort, but I wired mine into a brake flashing module that rapidly flashes the light 3 times before going solid. A little annoying for those behind me, but it definitely gets their attention.

    -John
    Westfield SEiW
    2.0L Duratec
    Throttle Steer

  4. #4
    Join Date
    Feb 2009
    Location
    The Frozen Northeast
    Posts
    404

    Default

    I installed a custom dynamics CHMSL (ST6126ARACPT) 24LED version in my roll bar with connectors tucked into end of roll bar. This ties into the rear chassis loom to provide running, brake, & turn signals.
    Very happy so far
    Last edited by wemtd; 05-07-2018 at 08:02 PM.

  5. #5
    Join Date
    Apr 2018
    Posts
    9

    Default

    Flashing brake light seems very effective. Seen a few in the streets and definitely gets good attention. We'll start working on the Caterham right after we finished installing the new rack and tonneau cover for the kayak mount on the truck. We'll consider getting as 12" 3rd brake light as well.

  6. #6
    Join Date
    May 2013
    Location
    South Bay, CA
    Posts
    268

    Default

    I HATE blinking brake lights. It does get attention, but it's a distraction. Most of them turn on every time you depress the brake. If you could have it only turn on with a significant braking event then it would make sense. Maybe a pressure switch on the brake line?

    Daniel

  7. #7
    Join Date
    Jan 2006
    Location
    Seattle-ish
    Posts
    1,084

    Default

    Given the risk to a se7en and its passengers from just a minor rear impact, I'm fine with displeasing the person behind me to reduce that risk. Besides, people are often so interested in these cars, I don't think the annoyance factor is as high as with a normal vehicle.

    The proof to me that this setup makes a difference came with dissuading tailgaters who were trying to get a better look at the Westfield. Before the blinking module was added, it would usually take 2-3 taps of the brakes to get the person to clue in and back off. These days I rarely have to hit them more than once.

    -John
    Westfield SEiW
    2.0L Duratec
    Throttle Steer

  8. #8
    Join Date
    May 2013
    Location
    South Bay, CA
    Posts
    268

    Default

    John,
    You make a good point. My annoyance is more with standard sedans having these flashing brake lights. It's probably a good bet on these oversized gokarts.

    Daniel

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