Park light short
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From: Haughton La
Park light short
Having a problem with my park lights busting the #8 fuse under the hood.
It started today on my way to work.Dash lights and park lights went out going down the road.Everything else works fine .When I got home I thought it might be the trailer wiring I have been needing to do something with so I fixed it and put in a new fuse.Turn on the park lights and nothing .Fuse is blown again.A previous owner had put a 30 amp fuse in it and I replaced it with a 15 amp as the book said .So I disconnected the trailer lighting at the main wiring harness under the truck .Put in a 30 amp and turned on the lights blows the fuse again.I disconnect the big plug at the back of the truck that runs all the tail lights and try another fuse .It blows .I looked at all my front parklights and nothing seems blown or burnt .I looked at the back of the switch best I could without taking it all the way out and couldnt see anything wrong .What I am thinking now is possibly a bad switch ?Does this sound right ?Anyone have any other ideas ?Is there a way to check the switch ?How do you get the switch out ?I know some older fords the switch gave problems . Has anyone else had to replace a switch ?
I am really at a lose here and any help or advice is much appreciated .
It started today on my way to work.Dash lights and park lights went out going down the road.Everything else works fine .When I got home I thought it might be the trailer wiring I have been needing to do something with so I fixed it and put in a new fuse.Turn on the park lights and nothing .Fuse is blown again.A previous owner had put a 30 amp fuse in it and I replaced it with a 15 amp as the book said .So I disconnected the trailer lighting at the main wiring harness under the truck .Put in a 30 amp and turned on the lights blows the fuse again.I disconnect the big plug at the back of the truck that runs all the tail lights and try another fuse .It blows .I looked at all my front parklights and nothing seems blown or burnt .I looked at the back of the switch best I could without taking it all the way out and couldnt see anything wrong .What I am thinking now is possibly a bad switch ?Does this sound right ?Anyone have any other ideas ?Is there a way to check the switch ?How do you get the switch out ?I know some older fords the switch gave problems . Has anyone else had to replace a switch ?
I am really at a lose here and any help or advice is much appreciated .
Hotshot
Joined: Jan 2002
Posts: 17,988
Likes: 207
From: La La Land
It's not the switch. It's the wiring.
A brown wire is shorted to ground somewhere, and there's whole-lotta' "where's" on these trucks for it to short to!
Need a wiring diagram to get you started?
Pop
A brown wire is shorted to ground somewhere, and there's whole-lotta' "where's" on these trucks for it to short to!
Need a wiring diagram to get you started?
Pop
Hotshot
Joined: Jan 2002
Posts: 17,988
Likes: 207
From: La La Land
The only connector that I know about is the one you've already unplugged.
That's not saying there aren't more, which there undoubtedly are.
A tip is to get some kind of twelve-volt "beeper" and put across the fuse plug. You will have +12 volts on one side, and "ground" on the other. It should be making noise.
Start shaking wiring harnesses until the beeping goes away, or is intermittent. At that point, you're getting close.
I don't envy you this situation at all!
Pop
That's not saying there aren't more, which there undoubtedly are.
A tip is to get some kind of twelve-volt "beeper" and put across the fuse plug. You will have +12 volts on one side, and "ground" on the other. It should be making noise.
Start shaking wiring harnesses until the beeping goes away, or is intermittent. At that point, you're getting close.
I don't envy you this situation at all!
Pop
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