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Re: HCHII Horn Blows
The "yuppie button" is a wiring hack to momentarily light
the brakes, reverse, and hazards all at once. [Also lights
front directionals as a side-effect; splitting the fore/aft
blinker harness would require a lot more work]. In the case
of the prius, one relay and a few diodes, and a bit of
searching the wiring diagram to figure out available tap
points. In the ol' Trooper, a serious wiring hack [including
the front/back split] and a box of *three* relays -- that
was the original prototype. No "illegal" non-DOT-rated light
fixtures, total stealth until you use it, works reasonably well
modulo the occasional ******* who sees it and simply rides closer
as some twisted conceptual "revenge". Most people back off
in a satisfyingly prompt fashion, and only a few need another
reminder when they drift up again.
.
_H*
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