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Wiring Schematic |
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Ted J
Orange Level Joined: 05 Jul 2010 Location: La Crosse, WI Points: 18699 |
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Posted: 09 Dec 2018 at 3:04pm |
I've got problems with the lights on my 2004 Chevy Silverado. The running lights on the right side don't work. Can anyone tell me where the wires go? I've tested and there is no juice coming in. There are just too many wires to figure where it's coming from. I need a schematic so I can follow the colored wire to see where it's not making contact.
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"Allis-Express"
19?? WC / 1941 C / 1952 CA / 1956 WD45 / 1957 WD45 / 1958 D-17 |
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john(MI)
Orange Level Joined: 12 Sep 2009 Location: SE MI Points: 9263 |
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I Googled it and from what I read, the headlight parking light and side marker lights are all connected together. I''m guessing the rear are as well. The plug should have a brown wire and White wire, brown is 12v, white is ground. It was also mentioned that there may be as many as 4 fuses for the lights and a relay. You can switch the starter relay with the lights relay to check that out according to what I read.
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D14, D17, 5020, 612H, CASE 446
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PaulB
Orange Level Joined: 12 Sep 2009 Location: Rocky Ridge Md Points: 4408 |
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Get something older with fewer wires😸 while at the Dodge meseum a few yeas back they had a wiring harness for a current model year car in a very large glass case and one from a 49 model of a compareable car that was coiled up to be smaller than a lasso. I alway feed 12 volts back into the wire that is not getting power and follow the wire backwards to plugs to see what I’m getting. Connections and switches are generally the culprits.
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If it was fun to pull in LOW gear, I could have a John Deere.
If you can't make it GO... make it SHINY |
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jaybmiller
Orange Level Access Joined: 12 Sep 2009 Location: Greensville,Ont Points: 21458 |
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Obvious place to start is the owner's manual in the glove box. It 'should' have a list of fuses and what they power. I suspect either a blown fuse or a corroded connector. Google should be able to locate a schematic though it might take a few tries.. Worst case is the 'BCM' Body Control Module aka 2nd computer has puked the FET that powers those lights. hmm.. you have confirmed the bulbs are good ? NOt just looking but with 12V on the bench ?? Had a trailer light(1157) looked fine,really...but no worky on the bench ! Jay
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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor) Never burn your bridges, unless you can walk on water |
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Ted J
Orange Level Joined: 05 Jul 2010 Location: La Crosse, WI Points: 18699 |
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Yes, I have checked and switched bulbs and relays. It definitely is something to do with the wiring. And of course they give you all kinds of room to work on all this stuff.
On another note, I was going to add another horn to it. It's only got that one anemic GM horn, so lets put a GOOD one in it. Well, I can actually SEE the horn, but there is NO WAY of getting near it unless you dismantle the front end..... GIVE me BACK my 67 Chev truck!! Heck, you could stand in the engine compartment and work on about anything. And it probably only had about 10 fuses.... |
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"Allis-Express"
19?? WC / 1941 C / 1952 CA / 1956 WD45 / 1957 WD45 / 1958 D-17 |
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tadams(OH)
Orange Level Access Joined: 17 Sep 2009 Location: Jeromesville, O Points: 9632 |
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Modern technology just remember how easy is was before, course you could work on it then an didn't need to take it and get ripped off
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shameless dude
Orange Level Joined: 10 Apr 2017 Location: east NE Points: 13611 |
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check the ground...they about all do it
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jaybmiller
Orange Level Access Joined: 12 Sep 2009 Location: Greensville,Ont Points: 21458 |
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hmm.. which 'running ' lights ? the front ones, the rear ones ? or all of them ?? I found one schematic and it shows a separate fuse for JUST the right rear 'parking' lights and right license plate light. Shamless bring sup the ground which remivded me all lights are in PLASTIC, so there HAS to be a ground wire... If you checked the 'no power' at the socket did you use the frame as the ground ? If yes, then it's a 'feed' issue..busted live wire or blown fuse. If no, then busted ground wire. These long distance reapairs are a lot harder as all the normal stuff I'd do, well, I'm not there to do.... Jay
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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor) Never burn your bridges, unless you can walk on water |
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DMiller
Orange Level Access Joined: 14 Sep 2009 Location: Hermann, Mo Points: 29459 |
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Is also the Christmas light issue with so many parking lights where they have to have continuity from a Running light as a Tail or front T/S lamp to make ground.
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Ted J
Orange Level Joined: 05 Jul 2010 Location: La Crosse, WI Points: 18699 |
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OK, according to all the fuses etc. everything is A OK. So now,,,,,,down to the sockets. I have continuity between the socket exterior and the ground. So that is good. So, that leaves me with the wiring itself. As there are at least 10 wires going through the sheaf and you can't tell which direction they are going, how do I find the culprit wire? There must be a schematic out there somewhere? Life used to be SO easy.... then we got all these engin-ears involved and now you can't do anything the old way....
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"Allis-Express"
19?? WC / 1941 C / 1952 CA / 1956 WD45 / 1957 WD45 / 1958 D-17 |
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