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Subject Topic: 97 ford f150 dome light (Topic Closed Topic Closed)

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mwithey
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Posted: September 07, 2002 at 10:57 AM - IP Logged  

Please help, I am trying to figure why my dome light doesn't work at all in my 97 Ford F150. I have checked the fuses (ok) and the bulbs (ok). The light will not light regardless of 1 door open 2 dome light selection on headlight switch or 3 using the rocker switches on the light fixture itself. I just bought the truck (used) it used to used for the forest ranger, maybe the light was disconnected or the control module (does it have one? and if so, where would it be? ) has been removed. There is no listing in my Chilton's auto repair schematic of any dome light or control unit.

Thanks Mike W 


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Velocity Motors
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Joined: March 08, 2002
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Posted: September 07, 2002 at 11:13 AM - IP Logged  

Have you checked behind the pin switch to see if the wire has been disconnected ??


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Jeff
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Chris Luongo
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Posted: September 08, 2002 at 9:02 PM - IP Logged  

I could be way, WAY off base here, but I just remembered something..............The Ford Crown Victoria police cars have what they call "dark car" mode....the domelight is disabled, presumably so the cops can sneak in or out of their car unnoticed.  I remember reading an article on www.crownvic.net about how to switch "dark car" on and off.  You might get some help there.

Otherwise, this is how I'd start to troubleshoot the problem.

Unfasten the dome light so that you can A.  Note the wire colors and B.  test the wires.  Hopefully have have a meter or test light, and know how to use it.  In a pinch, you can remove the dome light bulb, attach wires to it, and use it as your test light.

When the domelight is on, one of the wires at the light should be negative, the other positive.  I suppose that's obvious, but I'll get to my point........when the car door is closed, one of these wires gets switched off.  Most vehicles use a "negative trigger" system, meaning the positive is constant at all times, and the ground is only present when the lamp is switched on.

For whatever reason, one of both of those wires isn't getting power.  You should be able to follow those wires down the A-pillar and figure out where they go.  Maybe someone cut one of them or something. 

Also, you might try getting at the wires behind the headlight switch, and see if you can find and test the domelight control wire there.

Another idea:  Make contact with the mechanics who work on the forest rangers' trucks.  They may disable all of the trucks' dome lights in the same way, and therefore could tell you how to reconnect it.

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srprew38
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Posted: September 12, 2002 at 11:12 AM - IP Logged  

My 1995 Windstar horn doesn't work. The fuse is ok.

I can't find it first of all, so I can test it.

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Stan Prew
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SnomanF150
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Posted: September 26, 2002 at 7:23 PM - IP Logged  

there are two switches in each door of the ford trucks.. one is for the door opening to turn on the light and the other is for if the handle is lifted and the door is locked, the light will come on (the handle switch maybe an XLT feature, not sure.)  I would start be checking those.. they go bad all the time.. may dome lights come on, not come on.. false alarms.. Ford and there better idea..

Yeah, I drive one too... lol

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