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#1223217 06/29/2017 11:40 PM
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'Bolter
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Anyone have an idea where to get a manual/wiring diagram for my 1952 6400 2 ton? Have spent the last three days searching the internet and no one seems to have one. It has a bunch of stuff the pick ups don't have, so I assume there is a drawing somewhere. I even found several sites that say they have original factory manuals, but not for the 6400.


1954 Chevy custom 261CID, T-5 5 Speed.
1952 Chevy 6400 2 ton hydraulic flat bed.
Joined: Sep 2001
Posts: 29,262
Bubba - Curmudgeon
Bubba - Curmudgeon
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What original electrical stuff do you have that is not on pickups?

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'Bolter
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My Canadian 52 1700 3 ton uses the exact same wiring as the pickup. There are no extra electrical things on it other than signals and fire truck stuff, but they are completely additional to the other wiring. The 2 speed rear is vacuum and no electrical involved.
Are you sure the extras you have aren't just add ons, and the basic wiring is the same too?


1952 Chevrolet 1700 Bickle Seagrave
"Old Smokey'"
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'Bolter
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That is what I don't know, and why I asked the question. I image the basic wiring would be the same, I guess I could follow out the other wiring and see where it goes. But I was planning to buy a wiring harness, which I can't find for the 6400. The bed is 14 feet long, not 8 like the pickup, so the wiring harness won't be long enough and I don't want to splice under the bed somewhere, I'd rather buy wire and run every wire myself.


1954 Chevy custom 261CID, T-5 5 Speed.
1952 Chevy 6400 2 ton hydraulic flat bed.
Joined: Apr 2005
Posts: 7,442
Bolter
Bolter
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If you don't want to cut and splice the only option is to make your own I doubt anyone makes a harness for your specific truck. There were just too many variations of the 6400 plus every farmer hacked into the original to add whatever he needed.🛠


Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
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On the bigger trucks (and I would think the pickups too) there are 3 individual harnesses (4?).
The cowl (main ) harness that goes through the firewall from the fuse box on the engine side to the instruments and across the firewall.
The front harness that connects to terminal blocks and goes to the front lights.
The engine harness , as few as 3 wires that comes through a separate hole in the fire wall to the coil, etc.
The rear harness that goes from the main harness to the tail light and frame mounted gas tank.
These connect to the cowl harness with bullet connectors.
So the length of the frame would just require a longer rear harness.
If the pickup harness has the rear harness as 1 piece, just ad your rear harness to the bullet connectors for the tail lights.

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Bubba - Curmudgeon
Bubba - Curmudgeon
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Jim's reply sums it up, as long as you have no more circuits than on a pickup.

If you have two tail/brake lamps you'll have to run a few extra wires - the locations of the wires would depend on if you want to run turn signals.

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Sir Searchalot
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Buy a pickup harness and splice. There are VERY FEW wires going long. Crimp/solder/weatherpack connectors and sleeve. As you can see, this is what the gurus are saying. It's no big deal. Overthinking.

If you wish, you can "replace" the few rear wires in the new harness with your own longer wires. Use the replaced wires for something else like cab top running lights or whatever extra wiring a flatbed has.

Every color available, 20 ft spools, $7.

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'Bolter
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Thanks for everyone's input. I guess I'll buy a harness and make my own rear harness to tap into it so all the wires are clean and protected.


1954 Chevy custom 261CID, T-5 5 Speed.
1952 Chevy 6400 2 ton hydraulic flat bed.
Joined: Dec 2015
Posts: 2,061
Big Bolt Forum Moderator
Big Bolt Forum Moderator
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these guys have all the wire and connectors at good prices. I buy all my stuff from them (unless I only need a few feet)
https://www.delcity.net/store/14-Gauge-Wire/p_181400.h_181789


Mike
1955 Chevy 6400 ex-flatbed (no bed now!) sold September 2023
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1958 Chevy 6400 flatbed W/dump
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Sufficient unto the day is the evil thereof
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'Bolter
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Thanks Mike, I checked out that link. Their 25 foot spools are even cheaper than the auto store. I'm always rewiring something, so I would probably buy several 100 foot rolls.

Chris


1954 Chevy custom 261CID, T-5 5 Speed.
1952 Chevy 6400 2 ton hydraulic flat bed.
Joined: May 2005
Posts: 8,988
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Sir Searchalot
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Just be advised that a harness with all the wires prewired to a fuse panel with some necessary connectors and contacts is a whole lot easier than building one. I've done both and the DIY is really not cheaper either. It was a good experience after I had done some premade harnesses but did not come away with being ahead in any other way. PITA basically.

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'Bolter
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I did some research on harnesses and there is a huge difference in price, anywhere from $200-$600, though the descriptions sound the same. I think I will get with my friend who builds custom cars for a living to sort it out.

Chris


1954 Chevy custom 261CID, T-5 5 Speed.
1952 Chevy 6400 2 ton hydraulic flat bed.
Joined: Sep 2001
Posts: 29,262
Bubba - Curmudgeon
Bubba - Curmudgeon
Joined: Sep 2001
Posts: 29,262
These standard circuits wiring harnesses are very good:

http://www.classicparts.com/1950-52-Wiring-Harness-Generator/productinfo/52-023/#.WVbg0BPyudE
http://www.oldchevytrucks.com/cart/product.asp?prodid=EL165C&i=19163|||||

I use the Classic Parts harness.

If you want braided harnesses, the cost is 2x to 3x more.

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Sir Searchalot
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Yes big difference in price. Big difference in what's in the kit too. I always go with American AutoWire because I always need all the extras they include. Many good parts other than wire. Very complete. Just read the list.

Price:
High end kits use cross linked GXL insulation and lower end use PVC insulation. PVC is adequate and GXL is better. (may work better with automotive connector crimps and connectors and has a higher temp rating). It's also about the number of circuits, the fuse panel, the amount/quality of extras, completeness, and the instructions.
If you are only going to do one truck and keep it for life, consider the high end. If flipping, different story. They less expensive will wire a basic truck. Not too many circuits in our trucks.

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'Bolter
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Being a teacher I am on limited funds, so I will probably need to go with the lowest end kit that is complete. I am not interested in a show restoration, it will be a farm truck, so I only need basic circuits. If the Classic Parts kit will wire my truck, that is what I will go with.

Chris


1954 Chevy custom 261CID, T-5 5 Speed.
1952 Chevy 6400 2 ton hydraulic flat bed.
Joined: Jun 2016
Posts: 332
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'Bolter
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Tim (tclederman),

The Classic harness is just wires, no fuse panel, that is what it looks like to me. But that may be enough. At least it would fit in my budget.

Chris


1954 Chevy custom 261CID, T-5 5 Speed.
1952 Chevy 6400 2 ton hydraulic flat bed.
Joined: Sep 2001
Posts: 29,262
Bubba - Curmudgeon
Bubba - Curmudgeon
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That is correct, it assumes you have the original fuse box.

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Sir Searchalot
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Chris, you are seeing the differences in pricing. It's good you are thinking and checking to see what's best at what price. It is nice to have a prewired kit with an inside-the-cab modern fuse box. But that is just my opinion. Maybe there is one that is affordable.
This AAW kit seems pretty nice, says extra length wires, has some extras and they use GXL wire. Free ship. 5 Stars, 21 reviews. Price seems very reasonable. AAW, best off the self kits in the business, bar none.
This is a "Hot Rod" or "Universal kit". They are always less expensive than an era correct, factory fit style kit. Your truck will never know. I am not being pushy just helping search. I realize what you said about farm truck and such, and I do understand. I appreciate all teachers and their commitment.

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'Bolter
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bartamos, that looks like a good kit. I talked to a friend last night who builds custom cars for a living and he said he would get me an EZ-Wiring kit at his cost. He uses them exclusively and has never had a problem. The kit includes 21 circuits, fuse box, relays, and a wiring diagram and step-by-step plans to install the kit. Sounds good to me. I guess this proves I need to use my own network a little more to get this thing done.


1954 Chevy custom 261CID, T-5 5 Speed.
1952 Chevy 6400 2 ton hydraulic flat bed.
Joined: May 2005
Posts: 8,988
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Sir Searchalot
Sir Searchalot
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Sounds good, lots of members here have used the EZ.


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