Question about 2007 Ford Five Hundred Limited Sedan

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NO INTERNAL LIGHTS FUSE BLOWN, WHICH FUSE IS IT?

Internal lights went out after i tried to change a blown lamp, shorted live wire, on lamp unit, to chassis. Can't find which fuse supplies power to lamps, no mention in the vans on-board booklet and i've buzzed out all the fuses but all seem to be good.

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Check the power ditribution box under the hood for any Max fuse blown. Check and see if any of the small fuses are blown.

Posted on May 24, 2009

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Park lamps not working in the rear blows fuse # 45 instantly like a short to power any ideas on where the ground is for the park lamps


First remove all the light bulb park light try a fuses if you dont blown one reinstall the light bulb one by on untill the fuses blown after that start from there follow the wire untill you see tha shory

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2004 Toyota Highlander, have no tail-lights, all other lights work ?


With the car jacked up and on safety stands, follow the wiring harness from the taillights to the front of the car. The wire is probably pinched, burned or shorted somewhere along the way. Did you have any work done on the bottom chassis area recently? Does sound like a pinched wire.

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Right head light is burning the fuse


The usual way would be with headlights off to check the two wires going (usual number) to that lamp unit, look to see compared to other lamp if the wires on both read the same resistance to ground---the motor for example.

If its blowing a fuse when turned on you have a short either across the wires or from a hot one to the chassis or metal of the body.

Short to the body or frame or across the wires going to the bad lamp side. all you should need is a volt/ohm meter.--could easily be a wire for the light touching the metal frame or body of the car.

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1 Answer

1997 BMW Z3 brake lights won't come on.


The brake lamp circuits on your 1997 BMW Z3 are pretty "old-school" and straight forward. Fuse #46 (15 Amp), located in the Front Power Distribution Box at the left rear side of the engine compartment supplies battery voltage to the brake light switch via the VIOLET/GREEN wire going into the switch. When the bake pedal is depressed, the voltage leaves the brake lamp switch on the BLUE/RED wire and supplies power to all of the brake lamp bulbs.

The brake lamp circuits do branch off and go to several control modules. This is ONLY for module INPUT to tell the module that the brakes are being applied. These modules include:
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The ONLY way that any of these modules could be affecting the operation of your brake lamps is if there is an internal short to ground in the module that is causing the brake lamp fuse to blow.

If NONE of your brake lamps are working, the most likely causes are:
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Yes, the BLUE/RED wire could be broken as well, but I would check all the other things listed above first.

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2002 Chrysler 300M, stop lamp & park/horn circuits grounded on load side. What can cause this?


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Finding The Source Of Electrical Shorts In Your Car

Electric Testing Techniques You Need to Know

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1992 lincol town car,no rear lights or brake lites, only turn signal and hazard lights work, front lights fine. And about the same time instrument cluster light went out.


The Park Lamps and Instrument Panel illumination lamps are controlled by the lighting control module. The problem could be either the headlamp switch or the Lighting control module. Most likely, the head lamp switch.
The most likely cause of the brake lamps not working would be a failed Brake Pedal Position (BPP) switch. It could also be caused by the multifunction switch. To find out if it is the BPP, check for power at the BPP switch. One terminal has a Light Green and Red (LG/R) wire and the other has a Plain Light Green (LT GN) wire. The LG/R wire should be hot at all times. The LT GN wire should be hot only when the pedal is pressed down.

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If there is power only on the LG/R wire even with the pedal pressed, then replace the BPP switch.

If there is power on both sides of the BPP then check fuses #20 (7.5 Amp) and #22 (20 Amp) also locatedin the CJB.

If fuse #20 is blown, you have a short between the BPP and the Lighting Control Module. If fuse #22 is blown, you could have a short anywhere from the BPP through the Multifunction Switch all the way back to the brake lamps themselves.

The Brake lamps, Turn Signals, and Park Lamps all share the same ground, so if the Turn Signals are working, it is not likely a ground problem.

Please also review this article: Where's The Fuse?

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it actually sounds like a problem with the power supply inside the radio. may have gotten wet or just shorted out.

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1 Answer

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