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On Wed, 2005-10-05 at 18:56, Dave Hall wrote: > Each brake light is nominally 20W isn't it? That makes the total current over 3 > Amps DC, with momentary currents higher. I have a bag of 30 normally-closed > microswitches here labelled 16(4)A at 250V AC. I assume the 4A is continuous > and the 16A momentary. I guess a capacitor across would help, and I've probably > got enough for a lifetime anyway! I would be worried about the service life of > one rated 2A, particularly as some people hold the brake pedal down for quite a > long wait at lights etc rather than use the handbrake. I guess it's the one > reason why the UK amber light showing when they are about to go green is > helpful. > You might use the micro-switch to run a relay that operates the brake lights. On a 12V system, that is an easy relay to find. Next time you are at the salvage yard, check the fuse box on a water cooled VW. It is full of relays, with ratings all the way up to 60A on a diesel. -- Russ Wolfe '71 FB AT '66 FB MT '64 T34 (not running) '65 T1 (not running) '05 KIA Sorento SUV russw@classicvw.org http://www.classicvw.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~