Question about 2001 Mercury Grand Marquis

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My headlights and domelight and lighter and my alarm light don't blink anymore what could be the problem

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Have the LCM (lighting control module) tested by the dealer.

Posted on Feb 22, 2012

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1 Answer

Dome light won't go on


Check the bulb, fuses or for broken wire. May be bad headlight switch or domelight switch. If on when opening door but not when trying to manually turn on, it's the switch.

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2006 ford Taurus dash lights not working and alarm when headlights are left on is also not working


If you have the owner's manual, check the chart showing which fuse is for the dash lights and that alarm. Try replacing that/those fuse(s) to see if you're back in working order. (Not sure where your fuse panel would be, but try the area under the dashboard on the driver's side.)

Nov 19, 2012 | Cars & Trucks

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I have a 1993 GMC Sierra. If the headlight or parking light switch is on nothing works in the tailight assembly. Blinkers work in the front but blink quickly.Replaced taillight circuit boards with new...


I'd be willing to bet your dash lights don't work either when you turn the headlight on.change the headlight switch, it has a short, it's only about 11 dollars at advance auto, and is fairly easy to replace. my 93 chevy did same thing, changed headlight switch, problem solved

Sep 09, 2012 | 1993 GMC Sierra K1500

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My 1992 Honda Accord Lx has problems with the lights through out the car...they start blinking on and off as soon as you open any door, and they stary blinking until the car is shut off and left alone for...


Wow. Well the dealer not having the equipment means they don't have the books anymore for a model that old. 10 years is usually their limit.
My first thought was a short in one of the circuits or an anti-theft problem. The lights flash and the horn blows when the alarm is on and a door is opened.
Trouble is, the heater and the lights are not connected in any way. Not even thru the key switch.
Something is providing power to these circuits with the key and the headlight switch off. If the headlight switch were the villain, the heater should not be affected. Same goes for the heater switch.
Now, I think there is a high speed blower relay. And there may be a parking light relay, and these relays may be in the same box in the engine compartment.
And they could have gotten wet or corroded.
See if you can find a blower relay and take it out. Same goes for the parking lights.

Jul 04, 2012 | 1992 Honda Accord

1 Answer

What is power point


looks like a cigarette lighter port,made for power for accesories,
they don't want to call it a cigaterre lighter anymore.Usually the power point has a lesser amp rating than a lighter port.

Feb 16, 2012 | 2004 Ford Taurus

1 Answer

2001 mazda 626 battery drain


If the headlight switch is turned fully to one side, it will keep the interior light on. Some models have the feature in the overhead light, that allows for 3 positions to be set. Position one lights the dome light when the door is opened. Position two keeps the Domelight on regardless of the door. Position three is the always off setting.

If the problem is not in the headlight switch or the Domelight settings, then check your rear Cargo door. Some even have a separate switch to turn on the interior light from the Cargo area so you can see what you are unloading.

If you find that none of the above solutions work, then you must have a doorjam switch that has come apart inside the doorjam. These are a bit more difficult to find because each must be removed without losing the wiring in a hidden area. But start with the Drivers door as it gets the most wear.

He could try to unsnap the light lens and remove the bulb. If you have underdash or door lights it may provide at least some lighting and you could do without the Dome light.

Jan 20, 2012 | 2001 Mazda 626

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I replaced the ignition switch in my 1995 ford ranger now the alarm won't stop


95 Ford Ranger Auto Alarm Wiring Diagram.

You need to re-check your ignition wiring. Here is the wiring for the alarm.

Battery Constant 12v+ Positive Wire (+): Yellow
Battery Constant 12v+ Positive Wire Location: Ignition Switch Harness

Starter Positive Wire (+): Red/Light Blue
Starter Positive Wire Location: Ignition Switch Harness

Ignition Positive Wire (+): Light Green/Purple
Ignition Positive Wire Location: Ignition Switch Harness

Second Ignition Positive Wire (+): Black/Light Green
Second Ignition Positive Wire Location: Ignition Switch Harness

Accessory Positive Wire (+): Gray/Yellow
Accessory Positive Wire Location: Ignition Switch Harness

Parking Light Positive Wire (+): White/Black Or Brown
Parking Light Positive Wire Location: At Headlight Switch Or Low In Drivers Kick Panel

Power Door Lock Negative Wire (-): Pink/Yellow (Type B)
Power Door Lock Negative Wire Location: In Either Kick Panel

Power Door Unlock Negative Wire (-): Pink/Light Green (Type B)
Power Door Unlock Negative Wire Location: In Either Kick Panel

Door Trigger Positive Wire (+): Black/Light Blue
Door Trigger Positive Wire Location: In Drivers Kick Panel

Domelight Supervision Wire: Use Door Trigger (Requires Relay)
Domelight Supervision Wire Location: N/A

Horn Negative Wire (-): Yellow/Light Green
Horn Negative Wire Location: At Steering Column Harness

Tachometer Wire Negative Wire (-): Any Wire With A Tan Stripe Or A Yellow Stripe
Tachometer Wire Negative Wire Location: At Ignition Coil

Brake Light Positive Wire (+): Light Green
Brake Light Positive Wire Location: At Switch Above Brake Pedal

Factory Alarm Disarm Wire (-): Dark Green/Purple
Factory Alarm Disarm Wire Location: Low In Drivers Kick Panel

Factory Anti-Theft System: N/A
Factory Anti-Theft System Location: N/A

Nov 16, 2011 | 1995 Ford Ranger Supercab

1 Answer

I have a 05 chevy cavalier. I just put new headlights in and now all of a sudden my car alarm keeps going off. (The horn blows and my dome light flashes) Also right before I installed the headlights, my...


disconnect battery for about 10 minutes. then reconnect. gives alarm time to reset and everything should be working fine.
when headlight went out it broke the circuit to alarm . now all you have to do is reset. ez

May 14, 2011 | 2005 Chevrolet Cavalier

2 Answers

Headlight switch. my headlights will not turn on


your auto headlamps are operated from a photo (light) sensor on the dash.-thats where you start and end, just replace the sensor...wow $800, they were gonna rob you blind!

Dec 27, 2009 | 2002 Buick Regal

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