Car brake Light

Posted on Sep 12, 2012

What's so special about this circuit? Well, the first third-brake light I installed I had to pull a wire from the Third Brake Light all the way underneath the carpet to the brake-pedal-switch and I thought it would be easier to pluck the signal of both brakelights via the trunk. Bench-test your circuit first and apply power to the circuit, with the brakelight connected, for at least a couple of minutes.

Car brake Light
Click here to download the full size of the above Circuit.

If the two SCR's are getting hot (depending on the type of bulb(s) in your 3rd brake light), mount coolribs on them. I used the NTE5483 which is a 8A, 200Vrm type.

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