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Old 12-03-2023, 09:19 PM   #1
Bus Nut
 
Join Date: Jan 2023
Location: Carlsbad NM
Posts: 338
Year: 2002
Coachwork: Blue-Bird All American RE
Chassis: F204270
Engine: Cummins 8.3 ISC
Headlight Thread Continuation: Modified Schem

Apparently, DRL is Daylight Running Lights. Who knew?

And there is a DRL ENG SIG. path that I'm not sure how to test?

DRL ENG SIG?
I supposed it could be with the engine running; the Audible alarm is canceled... feed.

Is there a master chart of the Pxx Connectors locations somewhere?
They are named but that doesn’t clue me into the location. "Body connector "could be anywhere...
And the colors as I have applied them are for separation only since I am partially color blind.

I am on the hunt for main feed to the DRLs
RE:Found the 4 Small Relays each associated with a portion of the DRL. In the side panel next to the driver's seat. I rotated them all in one position just to see if there would be a difference. And there was not.

Thanks in advance
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2002 Bus Chassis main useme.png  

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Old 12-04-2023, 09:06 AM   #2
Bus Geek
 
Join Date: May 2009
Location: Columbus Ohio
Posts: 18,621
Year: 1991
Coachwork: Carpenter
Chassis: International 3800
Engine: DTA360 / MT643
Rated Cap: 7 Row Handicap
interesting.. my DRL's are a simple separate fuse and relay on my bluebird. (its an IH chassis).. the DRL's are typically the high beam headlights activated in series so they get lower voltage to just make the bulbs glow.. at least. thats how it is on my bus.. when i went to LED headlights this wreaked havoc with the LED.. I pulled the fuse and no more DRL..



the forum kills the resolution of that wiring diagram so i cant blow it up big enough for me to see without it being too grainy..



if the DRL is active you'll have voltage at one connector's high beam but not both when the dash headlight switch is Off and the bulbs are unplugged.. when you turn the dash switch on (and no high beam dash light).. each connector should have voltage on its low beam circuit and no voltage on the high beam circuit..
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Old 12-04-2023, 09:32 AM   #3
Bus Nut
 
Join Date: Jan 2023
Location: Carlsbad NM
Posts: 338
Year: 2002
Coachwork: Blue-Bird All American RE
Chassis: F204270
Engine: Cummins 8.3 ISC
Hi thanks… that explains much. Are your fuse in the dash collection for the reel or somewhere else?
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Old 12-04-2023, 10:16 AM   #4
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Join Date: May 2015
Location: Central Tx.
Posts: 1,822
Year: 1999
Chassis: Amtran / International
Engine: DT466E HT 250HP - Md3060
Your thumbnail (picture) cannot be viewed in detail as posted.
Upload it as a file instead so that it can be viewed in detail.

Here is the wiring diagram for the DRL circuit, 4 relays. Relay P116 is where you should be.
It is being fedd by a 10 amp fuse.

Check fuse and check for voltage at the fuse>
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File Type: pdf 2002 BB drl circuit.pdf (42.6 KB, 3 views)
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Old 12-04-2023, 10:40 AM   #5
Bus Nut
 
Join Date: Jan 2023
Location: Carlsbad NM
Posts: 338
Year: 2002
Coachwork: Blue-Bird All American RE
Chassis: F204270
Engine: Cummins 8.3 ISC
trying again
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File Type: pdf 2002 Bus Chassis main useme.pdf (1,000.5 KB, 7 views)
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Old 12-04-2023, 10:44 AM   #6
Bus Crazy
 
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Join Date: May 2015
Location: Central Tx.
Posts: 1,822
Year: 1999
Chassis: Amtran / International
Engine: DT466E HT 250HP - Md3060
Quote:
Originally Posted by jfmusic@me.com View Post
Is there a way to add another file ... I have not spotted the mechanism on the forum
yes, when you post or reply, scroll down and look for the button that says Manage attachments.
A new window will open up so you can select your file and upload.
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Old 12-05-2023, 11:55 PM   #7
Bus Nut
 
Join Date: Jan 2023
Location: Carlsbad NM
Posts: 338
Year: 2002
Coachwork: Blue-Bird All American RE
Chassis: F204270
Engine: Cummins 8.3 ISC
Did the resend of the pict, now PDF come in any better?
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Old 12-06-2023, 11:08 AM   #8
Bus Crazy
 
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Join Date: May 2015
Location: Central Tx.
Posts: 1,822
Year: 1999
Chassis: Amtran / International
Engine: DT466E HT 250HP - Md3060
Quote:
Originally Posted by jfmusic@me.com View Post
Did the resend of the pict, now PDF come in any better?
Much better, now you can really zoom in and see the details.
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