Question about 1983 Ford F150

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I have a 1983 Ford F-150 when I turn my lights on after about 5-10 minutes they go off then back on over and again what are some of the reasons for this?

I changed the dimmer switch but it is still doing the same thing.

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Actual circuit and amp/draw testing needs to be done for a more accurate answer, however...
One of the possibilities is that the headlights may have a circuit breaker (instead of a fuse) in the fusebox or circuit. Your symptom sounds like the headlights are drawing excess amperage (or possibly a bad circuit breaker) that causes the breaker to overheat and break contact (as it's designed to do in cases of overload).
It's like a fuse, but a circuit breaker will automatically re-set after it cools (from a few seconds to a minute, usually), but a fuse "blows" permanently and doesn't have the ability to "re-set".

Also check/wiggle your headlight switch. The switch may have faulty contacts or a bad connection.

Here are 2 pics of common types of 12v circuit breakers.

I have a 1983 Ford F-150 when I turn my lights on  - 25276984-wspyjjtgbekdzn2dg5po0nyl-1-0.jpg 25276984-wspyjjtgbekdzn2dg5po0nyl-1-3.jpg

Posted on Nov 10, 2014


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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

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SOURCE: 2003 ford explorer windows don't work.

make sure window lock out switch is off.make sure you replace the 25 amp circuit breaker.replace the ACC delay relay.its tied in with power window circuit.

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SOURCE: How do I by-pass a broken floor dimmer switch on a

You don't. The last time I bought a floor dimmer switch was about 2 years ago and it cost me $17. Most vehicle inspection laws everywhere don't allow for jury rigging. They require what was on the vehicle when it was built. Besides, it's doubtful you could put something else in place for $17. You should be able to get one at a local auto parts store. Hope this helps.

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SOURCE: 1996 ford explorer turn on lights everything but

Replace the dimmer switch (Combination Switch.)

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