EF Civic and CRX owners are sometimes cought with a dead battery, because the car does not have a built-in warning to let you know if the lights are on when you turn the vehicle off. This is how to plug an inexpensive 12v piezo beeper from any electronics store into the right spot to create a headlight alert.
B. SUPPLIES
Radio Shack has a good deal on piezo buzzers or beepers for just a few bucks. The important things to look for are 12v DC capability and a nice tone that is not annoying...look for a curved sinewave on the box as opposed to a square or sawtooth pattern to get a pleasing 'eeeeeeee'.
Two Mmedium-sized 'spade' connectors
One foot or so of around 20-gague wire. Speaker wire is fine.
Buy Used Parts. Sell Used Parts. Free & Simple.