The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - headlights warning alarm when lights left on

Longhorn Man · 03-31-2010, 09:33 PM

I install them on all my trucks... all it takes is once to make you feel and look stupid.
I think they are still avalible at napa under P/N 782-1637
Real easy to hook up, at the fusr boc, you hook one wire to the dash light fuse, and another wire to the radio, or power window, or turn signal fuse... basicly, any fuse that turns off with the ignition.
The way it works, the dash lights are your 12 volt power supply, and the ground wire of the buzzer goes to a circuit that is powered with the key on. When you turn the key off, the power is removed from that circuit, and it basicly turrns into a ground, which completes the circuit, causing the most annoying buzzing noise you've heard in years, and it forces you to make sure the lights are off BEFORE you kill the engine next time. (at least that's how it works on me)

03-31-2010, 09:33 PM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: headlights warning alarm when lights left on I install them on all my trucks... all it takes is once to make you feel and look stupid. I think they are still avalible at napa under P/N 782-1637 Real easy to hook up, at the fusr boc, you hook one wire to the dash light fuse, and another wire to the radio, or power window, or turn signal fuse... basicly, any fuse that turns off with the ignition. The way it works, the dash lights are your 12 volt power supply, and the ground wire of the buzzer goes to a circuit that is powered with the key on. When you turn the key off, the power is removed from that circuit, and it basicly turrns into a ground, which completes the circuit, causing the most annoying buzzing noise you've heard in years, and it forces you to make sure the lights are off BEFORE you kill the engine next time. (at least that's how it works on me)