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Chadd707
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Joined: 08 May 2008
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 Posted: Thu May 08, 2008 10:11 am Post subject: Weird problem |
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| I have an 06 f150 crewcab my map lights only work when I step on the brake and it gets brighter when I put it in reverse. Also when I have my signal likes on they work fine but if I step on the brake while they are on the signals speeds up really fast. any help on this would be greatly helpful. |
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crzyjunyer
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Joined: 15 Apr 2008
Posts: 113
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From: jacksonville, al
Truck: 05 f150 xlt supercab 4x4
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| Posted: Thu May 08, 2008 10:51 am Post subject: |
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| has the truck been wrecked? sounds like some wires either got crossed or are fused toegether somewhere
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2004FX4F150
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Joined: 15 Nov 2007
Posts: 37
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| Posted: Thu May 08, 2008 12:10 pm Post subject: |
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| Sounds like it might be haunted. |
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POWERUPP
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Joined: 04 Mar 2008
Posts: 214
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From: Wa. State
Truck: 07 F-150 XLT 4WD S/Cab 5.4L
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| Posted: Thu May 08, 2008 1:41 pm Post subject: |
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Hi, sounds like it's related to the brake circuit. A truck manual & multimeter would help. Start checking for normal 12vdc power at the main fuse panel. Also check the tow connector if you have one. Might be wet or damaged. I had a damaged tow connector that caused lighting problems before. Hope this helps, POWERUPP. 
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07RedSuperCrew
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Joined: 11 Jun 2007
Posts: 8
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From: Pflugerville, Texas
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| Posted: Thu May 08, 2008 7:52 pm Post subject: |
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check your brake light bulbs....I used to drive a buddies old 79 t/a and the dome light would come on when the brake lights or light bulb was out....????
just a thought....
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07_F150_07
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Joined: 18 Oct 2007
Posts: 163
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From: Iowa
Truck: 2007 F-150 Lariat Crew Cab 4x4
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| Posted: Thu May 08, 2008 10:26 pm Post subject: |
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| I would definaterly check all of your bulbs, and then if you dont find a problem there, check the trailer connector 4,5, or 7 pin or whatever the truck is equipped with. Also, if it has a trailer brake controller, this could be causing some problems as well, you might check that or unplug it and see if it makes a difference. Something is giving a feedback causing a "short" to show up and it is feeding back through your map lights. And as POWERUPP said, make sure you have 12Volts DC at the fuse panel and the battery, check with the truck running and with it off, does this make a difference?? your battery should show 12.4-12.8 volts static charge, then check the alternator when the truck is running and you should have around 14.2 Volts there. Good luck, hope you find something. |
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