HondaPartsHero

for some reason i my dads del sol doesn't have the in car diagram on the fuse panel, and i am trying to find out which locations are for headlights and rear defroster, what i am trying to do is hook up a buzzer so if he leaves his headlights on it will beep, i have one in my crx(with those locations, black wire on r. defrost and red wire on headlights), but i just realized i am not sure he has a rear defroster, so what would i hook the black lead to off the piezo buzzer? any help would be appreciated