Ford Wiring/Electrical :: 2003 F150 - Unconnected Wire In Firewall
Mar 7, 2015
Just bought a used, 03 F-150 SuperCrew Lariat. Having some minor electrical issues. While cleaning truck, I discovered a red wire coming into engine area on passenger side of vehicle. Wire has a built in 40amp fuse but isn't connected to anything. What this is for/ should be connected to???
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The red wire coming from my fire wall is not connected to anything and I need to find what it is supposed to connect too it come out of my firewall near my steering column ... This is and 95 f150 with a 302 engine ...
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My 85 f150 5L is parked to far in into my alley.. the last time i saw my keys i moved it up to water the plants that it was tucked almost on top of.
ive been looking for the keys for 2 months.. the truck isnt being driven at all but i think my neighbors are getting mad at it being out so far.
I can get in the engine bay, and i have jumped the starter on our big trucks at work before.. but what wires do i have to join to put the ignition into the run position?
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I've searched all over and can't seem to find the answer. When I pull the tail light out of my 12 F150 there is a blue/wht wire and a black wire going to the back up light. I assume the blue wire is the positive and black is the ground. Is that correct?
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2003 f150 supercrew with 166,000 on it. Daily driver. Keeps randomly blowing 10A fuse under dash that controls ABS4X4 urn signals. No routine causes. Just blows at random times. Fuses were blowing instantly upon replacing then stopped. Doesn't blow when turning switches for turn signals or when turning it to 4x4. Just does it randomly. Sometimes will go months without blowing. Tore dash apart and can't find any wiring issues there. Could be somewhere else? Is ABS4X4. Turn signals going bad?
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Looking for a wiring diagram for a F-150 XLT LARIAT 5.8L 4BBL, all the books I have looked at show the wiring for this year with fuel injection and this truck came with a 351W with a Holley 600 4BBL, I have a few wire's in the engine compartment that melted away all the insulation, they are located close to where the harness passes the firewall before the ignition module. Is this a common problem on old models ?. Need a clear copy of the correct diagram for a f-150 1987 with carburetor, how I can get a copy so I can fix this problem before it gets worse.
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Only numbers 1,2,5 match the diagram below. my 6,7,8 are BK/W, PK/B, BR/PK. My Sony CD player came with bare wires. So I could cut off the truck oem plug. How hard is it to find a plug that goes from my OEM plug to my Sony CD player?
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My 77 F150 Ranger with a 400 in it didn't wanna start up at all. It wouldn't even crank or click like if the battery was dead. Then I tried again this morning and it cranked once then melted a red wired with I think a black or gray tracer, on the ignition. (I put a new solenoid on a couple months back and the positive also melted a bit by the solenoid but didn't pay any attention to it.) I'm just wondering what could be wrong with it to make it do that and how to fix it. Also when I went to put gas in it (it's on a slight hill making it lean to the driver side) it was empty but no fuel would go down the filler neck, then it started to gurgle and spit it out some. I was told it was vapor lock but I thought vapor lock happens when it's hot.
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I'm planning the install of a 1996 351w into my '77 F-100. I'm using the '96 accessory serpentine drive (FS-10 A/C compressor, '96 alternator, etc.). It needs to mate up to the '77 wiring. I'm going to use stock '96 underhood A/C components (accumulator, hoses, condenser).
As best as I can tell, the '96 system uses the ECU to manage the A/C system, but I've converted the '96 motor to a carb.
Looking at both the '77 and '96 systems I think the easiest underhood wiring solution would be to use the '77 compressor ON wire as a relay trigger, and use the '96 High Pressure Cut Off (HCPO) on the compressor manifold, and compressor cycling switch attached to the accumulator to interrupt the relay output to the compressor.
I can get the switches and pigtails, and I can look up their pressure trigger points, but I don't know the voltage the '96 switches operate at (12v or some reduced voltage?) or how to simulate their trigger conditions to see how they work. I guess that at ambient pressure the HPCO should be normally on and the cycling switch should be normally off. So I could just wire them into the relay ground or trigger connection. But of course they aren't simple two wire switches. (Edit: Looking at it online, the cycling switch appears to be two wire, the HCPO is 4 wire).
How to wire them, should I use them to interrupt the relay ground or trigger connection?
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On a 2008 E250, Where is the dome light wire and what color is it? To use with an omega security system.
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I have a trans temp gauge on my 1996 F350, I have it all hooked up and functioning except for the light. I have searched without success looking for where to splice in to get the light on and have it dimmable. I have a wire routed from the gauge to the center of the dash behind the stereo. What wire I can splice into?
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I have a wire that i think belongs to my Cruise control and I can't find out were it connects. It is dark blue/green stripe. It is in a wiring bundle with the oil sending wires ( two wires blk/w and y/o ).
I also get a code ....no sig from clutch neutral switch.
I just got done putting new heads on my little 2.9 and can't wait to use this as my daily drive. These two wiring issues are keeping my truck from running well enough to drive.
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I would like to hook up some auxiliary reverse lights, I want to use a relay. And activate the relay when I put my truck in reverse. I would like the relay to be in my custom relay/fuse box under my hood near my battery. I'm looking for a wire I can tap into, to use to active the relay as close to the battery as possible. Or at least a wire on the outside of the cab near the engine compartment. Maybe there's one coming from the tranny? I have a 2011 f250 super duty. XL, I think, its a very base model truck no power windows or locks, only fm/am radio, no NAV system, no remote unlock, no nothing, 2 wheel drive.
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I have a 1976 Ford F100 with a 302 and my problem is sometimes when my engine is running and I try to cut it off, it continues to run and the only way to stop it is to jerk the coil wire off. This is an intermittent problem. Happens about every 6 or 7 times I drive it. I have replaced the ignition switch and still have the same problem. Pretty sure it is some type wiring or ground issue, just need someplace to start.
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Here's the breakdown. I have a '95 Ford F150 that I bought the previous year and it has been nothing but a problem. The most recent problem is the attempt to turn on the headlights. I will pull the plunger to turn on the headlights but I will only get the parking lights and when attempting to turn on the high beams I still get nothing. The only way that I get any sort of lighting is if I pull on the turning stick (almost like doing a manual override on a tripped wall plugin). Now here's the kicker. I still have parking lights, brake, tail, cab, and dash lights. Winter in quickly approaching and the nights are already getting dark, pretty soon the days will be just as dark.
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I got my first truck today and it's a 1988 Ford F-150 and it runs great! The only issue is that the speedometer doesn't work and I won't be able to register it until it does. I was wondering what I can try out to maybe fix the issue and if not, how I would replace it. Every other gauge works, it's just the speedometer that isn't. The needle doesn't move at all it just sits at a 0 all the time.
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I have been trying everything to get my speedo working on my Ford. It didn't work for 3 months after I got it then I decided to put some gear oil on the cable. This made it work for about 200 miles then it would only work with the clutch in and then not at all. I've replaced the speed sensor(not one on rear end the thing the cable goes into), and the gear that goes on the end of it. If I hook a drill up to the cable the tach moves. Could the cable be stretched or just needs some speedo cable lube?
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I have a 1999 Ford F150 6 cyl. 4.2, 2 WD with 160,000 miles. Replaced the battery May 2010.
Today battery light came on. Battery gauge did not look like it was discharging. Had battery checked they said it was a little low but OK. Then they continued test and tried to check alternator, test stopped and they said something wrong with alternator most likely.
I took alternator out and had it bench tested. They said it was OK, putting out 98 amp on 95 amp alternator. They said check wires, grounds, harness, connections. Checked connections and wires as much as possible, reinstalled alternator, light still on.
Have not checked fuses yet. Was told to start vehicle, disconnect positive battery cable and if engine continued to run alternator was good, if cut off alternator was bad and to replace. Should I try this and is it true?
What is the part on the fire wall that is between the alternator and the battery that the wire connection runs through? Can it be bench tested/checked?
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My center brake light went out a month ago. Thought it was the bulb so replaced that, still didn't work. Checked the fuse and its not broken so my guess was electrical?
Hasn't come on once that I know of but I was randomly walking behind my truck and the light was on. Truck was off lights were off and key wasn't in the ignition.
Went and turned my truck on and turned the lights on and the cbl stayed on. When I switched my lights off it went out and stayed out.
Now I'm definitely thinking wiring but not sure where to start fixing?
Oh and it's a 1990 F150 XLT
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After replacing my battery cables (Pos and Ground),My Truck stalls every time I turn on the headlights. The truck stays running with the parking lights on or if no lights on at all. Could I have mixed up the 2 positive accessory wires?
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My '84 F150 4X4 inline 6 Died last night while driving. just conked out and died right there on the spot. no sputter... no gasping... just instant death...
after some investigation i found i wasn't getting spark anywhere. not at the plugs, not at coil. I have replaced the ignition module to no avail. still no spark I am going to swap in a the coil tonight. sure do hope this works.
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