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Q: What causes an open circuit when lights turn off?
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What is a circuit in which electricity doesn't flow called?

In a lighting circuit an open circuit will turn off the light.


What causes the brake lights to work when the headlights are off but when you turn the headlights and running lights on the brake lights go off on a 1992 Plymouth Sundance?

Often this type of behavior is caused by a bad ground for the lighting circuit. Check the ground circuit for the brake lights.


What is close circuit and an open circuit?

a closed circuit is a complete circuit with no breaks at all, one example:- a closed circuit occurs when you turn the light switch on an open circuit has a physical break in the circuit, which stops the flow of electrons. one example is when the lights are turned off, the switch creates a physical break in the circuit


A right-turn signal causes the emergency lights to flash when the headlights are turned on. What is the cause of this problem?

A mis-wiring or short circuit somewhere between the controls, fusebox and lights.


When you turn on a light switch you an open circuit. What goes in the blank?

When you turn on a light switch you do not have an open circuit.


Why do the dash lights and front turn signal lights turn on when you step on the brake peddle 1996 Jeep Cherokee Sport?

if you have a tow package, check the wiring connector for shorts, some times they corrodes and causes a short circuit


What type of circuit off all lights when you take on bulb out?

If you remove one light from a chain of lights, and the other lights turn off, then it is a 'series' circuit.


What causes the dash lights to blink when you turn on the turn signals on a 1999 Chevy Malibu?

An open ground or a short to ground when the signal is on. Usually a bad bulb.


My 2006 Ford Territory dashboard lights are flicking off and on especially when I turn the blinkers on. Does anyone know what causes this?

There could be many causes for the flickering instrument panel lights, but the most probable cause is a loose connection in the circuit providing the power to the lights, or a loose or poor ground connection.


1997 suburban Brake lights and turn signals work but tail lights dont what do I do?

Brake lights and turn signals are on a separate circuit from the tail lights. Tail lights are on the same circuit with the dashboard lights. If the dashboard lights aren't working either, check the fuse. If they ARE working, check the headlight switch.


Your headlights come on but your tail lights or dashlights dont come on when you turn the headlight switch on so what could it be and you already checked all the fuses?

No Lights, BUT the Fuse is OKThe most common causes of the issue you describe include:A connector in that circuit which has become disconnected.A buildup of road film or corrosion inside of one of the connectors in the wiring harnesses for that circuit.A cut or broken wire in the circuit which causes the circuit to be "open."Corrosion in the light switch or a relay [IF there is a relay in the circuit].Corrosion at a ground connection at the light assemblies, BUT that would usually only disable one of the lights, not all.A defective [corroded or worn out] main light switch.There probably may be some more causes that I can't think of now.


Why would a 88 Chevy truck have rear running lights working but brake lights and rear turn signal lights not working?

Brake Lights Don't WorkThe brake lights and turn signals are on a separate circuit of their of their own and thus independent of the tail lights and side marker lights ["running"] lights.There could be several causes for this problem, and without being able to see and troubleshoot the brake light wiring circuit no one can tell you the specific cause.Some of the possible causes include:Brake light switch is not adjusted properly.The fuse for that circuit is "blown" out.A wiring harness connector anywhere in that circuit has become unplugged, or loose.The ground wire or wires for that circuit have become disconnected, or the connection of the ground wires to the vehicle's grounded body sheet metal has been blocked by corrosion.A wire in the circuit has been cut, broken, or pulled loose.The brake light switch has become defective.There are probably a few other causes I have forgotten about.