Ford Super Duty (1999-2016) :: 2004 F350 - Rear Lights Do Not Illuminate When Headlight Switch Is On
Dec 3, 2014
I have a 2004 F-350 V8. The bed has been removed and it has a small dump body. This is the problem that just randomly started with my lights:
The headlights, dome lights, and tail light illuminate - the rear lights do not illuminate when the headlight switch is on. Otherwise, the brake lights work, the reverse lights work, the four ways work, and the turn signals work.
I checked the ground and believe it to be okay - What am I missing and where do I start?
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I picked up a 2014 F350 CC a couple months ago and have finally driven it in the evening. I went to turn on the first row map lamps and the light did not illuminate. I could turn it on with all of the interior lights, but not just a single map lamp. It also works when the door is opened or the RKE unlocks the truck.
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2004 f350 sensor switch will now and then let me turn it "on", but turns itself off immediately. Has never worked since I owned truck.
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2002 f350 5.4L
No rear running lights or brake lights
No third brake lights
Headlights work
No signals or hazard.
I have power to the multifunction switch when I use a jumper wire to bypass the switch I can make the lights come on depending on which slot I put it in. I replaced the multifunction switch twice just to see if I got a new bad one the first time, but to no avail. I cant run my truck a night without the lights.
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I have a 2000 E150 (Glavel Conversion) van and the interior lights do not illuminate when the doors are opened, although they used to. They also no longer turn on from the headlight dimmer switch. They will turn on individually if the manual switch at each light is pressed while the engine is running, so the bulbs and wiring appear to be working. I replaced the headlight switch with no noticeable effect. Is there a timing circuit that switches these on for a short period of time to allow illuminated entry that could have failed? If so, where would I find the module and how would I test? Relays and fuses look good.
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My sons 2006 F350 brake lights and rear turn signals quit working. When the headlights are on, all the lights operate but the rear turn signals and brake lights do not nor do the emergency flashers. The front signals work but flash very rapidly. Although I'm not an auto electrician, I'm fairly mechanically inclined but the fact that the front signals work, the rear don't and all lights work as lights, just not as turn signals or brake lights.
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No straight answers found yet. It's just the running lights that get stuck on.
I don't have auto lights, and after a period of a minute or 2 the lights pop off. There must be a relay sticking somewhere.
Looking for a diagram that shows where the relay for running lights is located?
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The illumination for my headlight switch and my shift-on-the-fly switch is not working. How do I replace the bulbs?
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When you turn the headlight switch to the headlight on position, you can pull it out exhibiting a positive click as if it is an additional switch for maybe optional fog lights. If the headlight switch is in the off or running lights only position, this will not pull out. I reviewed the elect. diagram but it does not show and addition circuit for the pull switch functionality?
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I'm really not satisfied with my Ford F350 SDC headlight bulbs!! I need a BRIGHTER bulb suggestion that won't break the bank and not have to add ballasts and rewire the circuit...
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2004 ford f 350 super duty, 6.0 Liters international diesel, 4door, 4x4, long bed, dual rear wheels. Over 200,000 mileage. I have no power to the trucks brake lights and no power to the tow plugs trailer brake lights, which is the center left and the center right tow plug blade style contacts, while using a 12 volt test light! All fuses are showing good and I replaced the brake switch at the brake pedal, and I also replaced the towing plug with the short wire and connector at rear of truck which is under the rear bumper and the frame mounted tow hitch bar
- Are there any relays that control the truck brake lights and the trailer brake lights ?
- If yes where are the brake relays exactly?
- Have I missed or not done something else to correct the problem?
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The rear tail lights on my truck have been out for a while now. I wasn't doing much driving at night so it wasn't much of a bother but the new job is getting me home a little later and having to drive with my hazards on is getting old fast.
My radio wasn't working either and I disconnected it a while back hoping maybe it had something to do with my lights shorting out but no luck. It remains disconnected. Just in the past few days my front running lights have went out as well.
I've tested all fuses multiple times (and replaced a couple of them) and checked and replaced bulbs. My brake lights, headlights, dash lights and hazards all work fine. I have the trailer light hook up on the rear bumper and disconnected it at the wiring harness as well hoping it was the problem but it wasn't.
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my truck at 210k miles got a new radiator (seeping at seams), thermostat, water pump (bearings shot, leaking), intake manifold (The crossover was leaking). It now has 227k miles. Oil leak in rear at head gasket by starter (bad head gasket?) It overheated the other day( blowing coolant out the expansion tank needle in the red) Replaced thermostat. Drove around for two full hours, seemed fine, Drove to work today it overheated ( same thing, blowing coolant needle pegged) didn't make it to work. There are no external leaks and its not putting steam or white smoke out the exhaust. I read somewhere that a blown head gasket could make the truck overheat, is that possible? What all could cause this problem?
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I have the ford upfitter switches in my 07 f350 and i had two flashing lights wired to switch 4 (10 amps) for snow plowing. The lights were LED and shouldn't have drawn much power but suddenly the lights stopped working because thers no power going to the fourth switch. They work on all the other switches. What could be the problem?
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