Question about 2003 Ford F150 Regular Cab

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Wiring diagram for Ford F-150 Pickup 2003

I am wiring a set-in camper for this pickup and need a diagram for the wiring on the pickup that runs under the truck. There's a mass of wires. Which one is the negative and which would run the utilities inside the camper? There doesn't seem to be a red. Does that correspond to a black? Thanks for any help!

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  • kkoertner Sep 13, 2008

    Well, we went to an auto supply store to get this "T" and the guy behind the counter used to work at a camper sales place here in town. He did not recommend the "T" because he said that THIS fix was susceptible to water damage over time and that we would have problems with connections. He said that they always tapped into the harness and then made sure that they taped everything back very carefully. So now I am back to my original question. I need a wiring diagram or color chart. He has used a volt meter and hooked up the tail lights, signal lights, and the ground. We need to know where the other 3 wires hook up. This is a slide-in not a pull-behind and it has a 7 way plug on it. We will need interior 12 volt juice and lights inside the camper. kkoertner

  • Anonymous Sep 30, 2008

    @headlightswitch

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6 Suggested Answers

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SOURCE: ford f-150 ignition switch

You will need to take the houseing off around the ignition should only be a couple of screws. Then here comes the fun bit, You will have to see if you can get hold of the tool that undoes and does up the bolts (as I will call them for you not there proper name but tech name may have you going the what ) that hold the ignition on or if not fussy you could just drill them out lift the ignition off after unlocking the steering lock so turn onto first click so radio would normally come on and with the new one you can always just change the bolts that may or maynot come with it( and most times they don't) with hex head ones or what ever is your fancy, but remember if you put it on with a spanner a thief can undo it with one, install just a reverse on uninstall. then you just screw the houseing back on. You maybe able to find or may know someone with ability to get the tool for the original bolts or if handy with a grinder and have a piece of metal around you could try making one. Most are a sort of rounded out triangle, but they usually only do up easily and are very hard to undo without the proper tool and most mechanics will just replace them with new ones as the reverse direction is rounded up to the back side to make it very difficult for a thief to simply undo in a few minutes, I've known people who have used a flat screw driver and smashed a groove into them to undo but remember that will also make them easy for a thief to just remove and bypass your ignition system ie steering locks and soforth

Posted on Jul 26, 2008

  • 18 Answers

SOURCE: f-150 ford pickup ignition switch -

Let's hope with a Supercab you have a tilt steering wheel.If so, just unhook the negative battery cable, line your wheels up straight, leave it in park, and turn the key on. On the underside of the housing the key and lock cylinder is in, above the hazard switch, is a very small hole with a locking pin inside. Using a small punch, or whatever works for you, simply push the pin in as you pull the lock cylinder out, sort of twisting and rotating the cylinder as you pull. A non-tilting column is a little harder, but it's not difficult, just take your time and think about what you're doing. First you need to remove the steering wheel, so make sure you mark the wheel and column in a couple places so it's easy to line up later. On the back side of the wheel are two screws that hold the front padding with the horn in it. Remove it, being careful of the wires, and disconnect. With cruise control, when you disconnect the wiring in there, you need to squeeze the ground wire terminal clip carefully but firmly (it's sort of like a "J" clip), and pull the wire out of the hole in the wheel. DON'T just pull it out, squeeze, it's spring loaded. Then remove the switch for the horn and the nut holding the wheel on. Use a puller on the steering wheel, but not one they call a "knock off", because it's pretty easy to screw things up if you go hammerin' on the wheel or the column shaft. Take your time. Then you'll find the little hole with the retaining pin near the base of the lock cylinder inside the column, remove it the same way. Remember, in park with key on. Hope this helps you out. If you happen to be referring to the actual "ignition switch", located inside the steering column (which most people don't even know actually exists), or you don't have the key and that's why you're doing this, you'll have to let me know, and I'll try to walk you through those procedures at a later date.

Posted on Aug 26, 2008

  • 2 Answers

SOURCE: 1983 dodge power ram 150 custom pickup truck

On the drivers side bottom of the tranny, there should be embossed numbers on the tranny housing. I have a 1983 dodge ram also. It has a 318 with 727 trans.

Posted on Nov 15, 2009

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SOURCE: Auxiliary battery use

The extra battery is there because of the glow plugs and intake heater of the duramax. During cold weather both of these systems draw high amperage from the batteries. A single battery will function, but not as well as a pair.

Posted on Nov 19, 2009

  • 1 Answer

SOURCE: '97 Nissan pickup truck mass airflow sensor malfunction?

mine did the same thing except i bought one from python and it worked fine for 3 days but the same problem came back

Posted on Jun 13, 2010

duane_wong
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SOURCE: The 1984 Toyota 4x4 pickup truck will not idle

On a 1984 Toyota I would look for a screw to set the low speed idle on the carburetor, if so equipped. Turn the screw until the RPMs are reasonable.

If you can maintain a smooth idle by adjusting the screw your home free.

If not, then there could be other problems with your vehicle's emission, ignition, comprression, or fuel.

Posted on Jul 07, 2010

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