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Old 10-18-2021, 01:45 PM   #1
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International 3800 wiring diagram dt466

I usually find stuff using Google but no luck finding a International 3800 school bus wiring diagram for a dt466. Not sure if the dt466 makes a difference as its all mechanical, no Jbus or OBD port

The fuse box is a rats nest so need the manual to try to clean it up and also to get a basic understanding of the electrical system.
Any help would be greatly appreciated.
Thanks!

The Valhalla Bus; currently located in Arizona

-Navseeker

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Old 10-18-2021, 04:55 PM   #2
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Join Date: Sep 2017
Location: Swansboro,NC
Posts: 1,736
Year: 86
Coachwork: Thomas
Chassis: Ford B700
Engine: 8.2
Rated Cap: 60 bodies
also add model year and body type
at this point all we know is international chassis with a 466.
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Old 10-18-2021, 08:38 PM   #3
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model year 1996, body type D
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Old 10-19-2021, 06:01 AM   #4
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Join Date: Apr 2018
Location: Taylor Lake Village, TX
Posts: 275
Year: 1994
Coachwork: Thomas
Chassis: International 3800
Engine: DT408 6.7L L6
Rated Cap: 14
If you are looking for body wiring, we would need to know the body manufacturer (Thomas, Bluebird, Amtran, etc...). If you are looking for chassis wiring, there isn't much of that if you have a mechanical DT466.
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Old 10-19-2021, 06:20 AM   #5
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Join Date: May 2009
Location: Columbus Ohio
Posts: 15,818
Year: 1991
Coachwork: Carpenter
Chassis: International 3800
Engine: DTA360 / MT643
Rated Cap: 7 Row Handicap
what year? I have the books for the 1990 model year which is for mechanical engines..
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Old 10-19-2021, 07:56 AM   #6
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Location: Near Flagstaff AZ
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Like DJ said...there's not much for the chassis, so I will assume you're talking about the body wiring (all that stuff for the sign and flashers and exit sensors). As mentioned, you'll want to tell us who made your bus body.

Where in AZ are you? We're up near Flag and could help out if you get stuck.

Please follow the "cut then check" rule...if you cut or disconnect a wire in there, start the engine and then see if the bus will move (goes into gear and brakes release). Too many new owners remove a bunch of stuff, then find out their bus is now a brick.
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Old 10-19-2021, 12:13 PM   #7
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Join Date: Dec 2020
Location: Las Vegas, NV
Posts: 223
Year: 1995
Coachwork: Bluebird
Chassis: International 3800
Engine: DT466 / MD3060
No wiring diagram, but we have a '95 3800 - might be similar setup to yours
I was able to remove about 70% of the wires myself by tracing them all over the bus. Most of then were speaker wires!
Our dash nest isn't perfect but it is way better than when we bought her - I can actually see what is going on in there and gave made some additions with no problems (backup camera and Hella 4x4 lights)

Tedious, but tracing every wire from switch to end was the best bet for us.

Most wiring diagrams leave me more lost than when I started anyway, but thats just me hahaha
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Old 10-19-2021, 12:30 PM   #8
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good point, its for a Amtran (Genesis) body.
I did find a pdf copy of the wiring diagram on reddit of all places
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Old 10-19-2021, 12:33 PM   #9
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its for a Amtran (Genesis) body from 1996
I did find a pdf copy of the wiring diagram on reddit
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Old 10-19-2021, 12:37 PM   #10
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its for a Amtran (Genesis) body from 1996
I did find a pdf copy of the wiring diagram on reddit

We are in Phoenix heating up Not stuck but greatly appreciate the offer.
I am from Norway so love the cool nature in Flagstaff , it's a great place to be.
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Old 10-19-2021, 12:39 PM   #11
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Good point about tracing every wire, may be the best way.
I did get a pdf wiring diagram (the manual) of the Amtran Genesis, tell me if you need a copy.

-Terje
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