No Brake Lights - Ford Powerstroke Diesel Forum
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post #1 of 12 Old 08-02-2010, 07:03 PM Thread Starter
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No Brake Lights

So...I have a 1995 F350 Powerstroke (as of today), and I have no brake lights. I have turn signals. I have back-up lights (even the ones up above the back window). But I have no brake lights. I didn't have any 15A fuses, so I swapped out the #4 fuse (which was blown, under the dash) for a known good fuse, and I still had no brake lights. All of the underhood and dash fuses (except for the #4) seem to be good. Is there a switch that would kill power to all three brake lights?

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post #2 of 12 Old 08-02-2010, 07:24 PM
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So...I have a 1995 F350 Powerstroke (as of today), and I have no brake lights. I have turn signals. I have back-up lights (even the ones up above the back window). But I have no brake lights. I didn't have any 15A fuses, so I swapped out the #4 fuse (which was blown, under the dash) for a known good fuse, and I still had no brake lights. All of the underhood and dash fuses (except for the #4) seem to be good. Is there a switch that would kill power to all three brake lights?

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Only switch that I know of is mounted directly to the brake pedal.
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post #3 of 12 Old 08-02-2010, 07:25 PM Thread Starter
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Is it relatively common for these to go out? 265K miles?

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post #4 of 12 Old 08-02-2010, 07:27 PM
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Is it relatively common for these to go out? 265K miles?

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If that's original, the yeah wouldn't be a bit surprised. Would be my main suspect if all fuses are okay.
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post #5 of 12 Old 08-03-2010, 07:49 AM Thread Starter
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OK...so I changed the fuses with new ones, and I put in a new switch. I now have constant power on one side of the switch, and power on the other side when the pedal is depressed. But still no lights. I'm at a loss. The bulbs have to be working (since the turn signals and tail lights work). I guess I'll pull the floor matt up and try to trace the wiring all the way back to the tails. It would seem likely to me that there is a cut in the wire for brake lights somewhere between the switch and where the split is to the 3rd brake light.

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post #6 of 12 Old 08-03-2010, 02:39 PM
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do you have tail lights and license plate lights ? check the connectors under the right rear corner near the rear wheel arch, there is also a ground bolt attached to the chassis under/near the connectors, remove it and clean the chassis where the bolt attaches.
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post #7 of 12 Old 08-03-2010, 02:41 PM
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Cycle the hazards on for ten seconds then off for ten seconds. Do this twice and your brake lights should be back.

Don't ask me why..... it just works.

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post #8 of 12 Old 08-03-2010, 10:05 PM Thread Starter
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I tried it, and that didn't do the trick. Thanks for the tip though. I'll have my mechanic check it out in the morning when he's doing tie rod ends.

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post #9 of 12 Old 08-04-2010, 11:34 AM
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Does the truck have tilt wheel? The Explorers and Sport Tracs had issues with a wire pulling loose when the steering wheel was tilted up. They usuall lost the turn signals but you might try moving the steering wheel up and down and see if the lights come on.
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post #10 of 12 Old 08-06-2010, 08:19 PM Thread Starter
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It ended up being a pinched wiring harness that was caught in the inside part of the steering column. Oddly, when it went to short it blew the brake bulbs (all 3), but the turn signals and tail lights still worked.
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