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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

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  #1  
Old 09-02-2010, 03:38 PM
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Exclamation Dash lights not working

hi everyone,
My problem is my dash lights arent working but my interior light is. Ive checked my fuses and they are all good, ive checked the actual switch and nothing seems to be wrong with it either. Does this sound like the light(s) behind the dash are burnt out? has anyone else had this problem?

Thanks
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  #2  
Old 09-02-2010, 07:54 PM
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Do you have taillights?
Dash lights are on a separate circuit from the interior but with the taillights.

It could just be that the plug isn't locked into the back of the cluster.
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  #3  
Old 09-02-2010, 08:21 PM
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my switch is messed up, so if i pull my **** all the way out my dash and parking lights wont work, i have to mess with mine for a while to get it all to work right... a switch is only 20 bucks i just gotta find time to order one
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Old 09-02-2010, 11:01 PM
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Did you recently change the stereo? The instrument lights, I believe, are all on a common ground. If you check the switch, and it checks good, look for a short in the ground...AFTER you triple check the positive circuit.
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  #5  
Old 09-03-2010, 02:31 PM
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I checked the actual lights behind the dash and they seemed fine. Yes i do have tail lights. Nope i havent done anything to the stereo everything is completely stock.... Everything worked completely fine until one day the lights to illuminate my dash stopped working. Im thinking the only thing left to do is change out the whole headlight switch and hopefully this solves my problem.
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Old 09-03-2010, 05:15 PM
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Sometimes the plug connecting the switch melts and contact is lost.
Replacement plugs with pigtail wires are commonly available in the aftermarket.
I've posted the part numbers before.

The other thing that may happen is that the wirewound potentiometer (variable resistor) at the back of the switch can break, or the little spring metal ear that makes contact with it can break, bend, or otherwise come adrift.

I'd bet on the plug.
Let me see if I can dig up that post.
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http://i246.photobucket.com/albums/gg117/donjamer/FTE%20Pics/blumax500-1-1.jpgFTE Fraternity of Blue Max
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  #7  
Old 09-03-2010, 08:33 PM
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I'm assuming this is for your 1988 F-150, you didn't say...
Most autoparts should have it or can cross this number to another brand.

Pico 5311PT 1987-1993 Ford "F" Trucks Dash Headlight Switch Nine Lead Wiring Pigtail.

Click the image to open in full size.



Hope this helps.





.
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'87 F-250
460, 4V 0-80457s, Edelbrock Intake, Saginaw PS Pump, BW 1356 4x4, 4.10 10.25", 130A 3G Alt., PMGR starter, ZF-5, - Lil' Red
http://i246.photobucket.com/albums/gg117/donjamer/FTE%20Pics/blumax500-1-1.jpgFTE Fraternity of Blue Max
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Old 09-05-2010, 03:55 PM
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yeah it is for my 88. I havent had time to look at it again but tomorrow i will be taking my dash apart again. So what your saying is that the plug is probably no good anymore? Thanks for the help
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  #9  
Old 09-05-2010, 06:52 PM
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In many cases the heat from the dimmer and corrosion of the contacts melts the plug or makes the old plastic very brittle.
That's why they sell a replacement plug.

As I said, the switch could be bad in the back. But you will be able to tell when you pull it out.

Since you have had the dash apart before it would be worth checking that the other end of the harness is firmly seated in the back of the cluster.
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'87 F-250
460, 4V 0-80457s, Edelbrock Intake, Saginaw PS Pump, BW 1356 4x4, 4.10 10.25", 130A 3G Alt., PMGR starter, ZF-5, - Lil' Red
http://i246.photobucket.com/albums/gg117/donjamer/FTE%20Pics/blumax500-1-1.jpgFTE Fraternity of Blue Max
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  #10  
Old 09-06-2010, 02:26 PM
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The plug itself looks fine and nothing seems to be wrong with it. Im going to go to a scrap yard and try and get the whole switch and plug together sometime this week. Hopefully this will solve my problem
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  #11  
Old 09-06-2010, 02:45 PM
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The brown wire is variable current for the dash lights.
Can you check for current coming out of the switch when it's turned right up to the stop?
Maybe you can trace it and look for an open or short?
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'87 F-250
460, 4V 0-80457s, Edelbrock Intake, Saginaw PS Pump, BW 1356 4x4, 4.10 10.25", 130A 3G Alt., PMGR starter, ZF-5, - Lil' Red
http://i246.photobucket.com/albums/gg117/donjamer/FTE%20Pics/blumax500-1-1.jpgFTE Fraternity of Blue Max
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  #12  
Old 09-07-2010, 05:01 PM
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I am having the exact same problem with my '91 F250... I believe my problem started one day when I was turning on my headlights via the switch and I heard a tiny "pop" noise followed by a tiny metallic sound as if something like a washer had popped off and fell off the backside of the switch. My headlights still work but no interior/dash lights now. My guess is that I/we need a new switch. Good luck!
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Old 09-07-2010, 07:32 PM
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mine done this and it was my dimmer/interior light switch. All i had to do is replace it and everything worked wonderfully.
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  #14  
Old 09-08-2010, 08:23 AM
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I got a a new switch unit. unpluged my old one and put the new one in and problem was solved. Looking at my old one i can tell that the spring was broken. Thanks for the help guys
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Old 05-02-2013, 09:59 PM
Robert Jax Maxwell Robert Jax Maxwell is offline
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my dash lights on my 97 ford explorer are out

wht do i do to fix could it be a fuse
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Old 05-02-2013, 09:59 PM
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