Reply
 
Thread Tools Display Modes
 
Old 06-17-2019, 02:12 PM   #1
Mini-Skoolie
 
Join Date: Apr 2019
Location: Loudoun, Virginia/Bus in Beckley, WV
Posts: 38
Year: 2000
Coachwork: Thomas Built
Chassis: Saf T Liner MVP EF
Engine: CATerpillar Diesel
Left Signal Horn - why MD, Why?

So my bus has been setup so that it honks while making left turns and when the hazards are on. Why Maryland decided that was unknown.

Anyone have any suggestions for a 2000 Thomas Built Safe-T-Liner MVP EF?

I bought a tester light but because I have mine parked in a residential area the neighbors no likey when I go left or try to diagnose.

I will post a picture of my power panel this weekend. I'm out of state with the day job.
Aegis2x is offline   Reply With Quote
Old 06-17-2019, 02:34 PM   #2
Bus Crazy
 
Join Date: Feb 2012
Location: Salt Lake City Utah
Posts: 1,538
Year: 2000
Chassis: Blue Bird
Engine: ISC 8.3
That's a weird "feature!"


As a first suggestion, find the horn unit and unplug it. Connect a test lamp instead. That'll make the diagnostic process much more neighbor-friendly.
family wagon is offline   Reply With Quote
Old 06-17-2019, 02:46 PM   #3
Bus Crazy
 
Join Date: May 2016
Location: Georgia
Posts: 1,520
Year: 2001
Coachwork: Blue Bird
Chassis: IH
Engine: T444E
Rated Cap: 14
I'm not entirely convinced that's an intentional "feature" (or even legal in most places), but undoing it is a good idea. Sounds like a turn signal wire is connected to (or possibly just touching) the horn circuit. I agree, disconnect the horn and use a test light to diagnose.
Brad_SwiftFur is offline   Reply With Quote
Old 06-17-2019, 03:15 PM   #4
Bus Crazy
 
Join Date: May 2014
Location: West Ohio
Posts: 1,100
Year: 1984
Coachwork: Bluebird
Chassis: International 1753
Engine: 6.9 International
Rated Cap: 65
I highly doubt that's a feature. You likely have wires shorted somewhere. Most likely in the tilt area of the steering column.
Booyah45828 is offline   Reply With Quote
Old 06-17-2019, 03:47 PM   #5
Skoolie
 
Join Date: Sep 2018
Posts: 213
Year: 2007
Coachwork: Thomas Built
Chassis: Minotour
Engine: Chevy Express 3500 6.6l
Yeah, unplug the horn. Donít need a horn when you got a finger!

Kidding!

+1 on the steering column short
Danjo is offline   Reply With Quote
Old 06-17-2019, 04:04 PM   #6
Bus Nut
 
CHEESE_WAGON's Avatar
 
Join Date: Sep 2013
Location: Virginia
Posts: 340
Year: None
Coachwork: None
Chassis: None
Engine: None
Rated Cap: None
Quote:
Originally Posted by Aegis2x View Post
So my bus has been setup so that it honks while making left turns and when the hazards are on. Why Maryland decided that was unknown.

Anyone have any suggestions for a 2000 Thomas Built Safe-T-Liner MVP EF?

I bought a tester light but because I have mine parked in a residential area the neighbors no likey when I go left or try to diagnose.

I will post a picture of my power panel this weekend. I'm out of state with the day job.
Could be shorted wires, but I call BS on this being a law of any sort. I did find something about an adopted policy in Cleveland for their RTA buses. My money is on a disgruntled mechanic who had a beef with a boss or a driver and was quitting anyway. Or perhaps a prankster who got fired and no one could figure out how to take it back to normal.

Case in point -- My mother drove for the county I lived in as a kid. One of the bus garage mechanics was our neighbor, whom my folks had purchased their property from. He thought it would be a good prank to jump the overhead ceiling lights from the flashing loading / unloading lights (our buses didn't have ambers back then). There were a few other pranks he pulled of the sort.

But back to your situation, it could be something as simple as jumper wires at the fuse block. I would start there -- look for any 'extra' wiring at the flasher relays. But as others have suggested, disconnect the horn, neighbors will be much happier until you figure this out.

Oh, and BTW, if it was done that way for a serious reason, it's because pedestrians are stupid and don't pay attention. ;)
__________________
"Cheese Wagon" <anomaly.va@gmail.com>

Former owner - 1989 Ford B700 64-pass Blue Bird (Rest In Peace, Cheese Wagon)
CHEESE_WAGON is offline   Reply With Quote
Old 06-17-2019, 08:08 PM   #7
Bus Crazy
 
ol trunt's Avatar
 
Join Date: Apr 2012
Location: So Cal
Posts: 2,357
Year: 1935
Coachwork: Superior
Chassis: Chevy
Engine: 317 ci/tid / Isuzu
I'd go with "stupid pedestrians" and add deep school board pockets.

Maybe once you figure out what is really going on you might consider hooking up a small not too noisy beeper that sounds when the directionals are on. My little skoolie is noisy enough that I can't always hear the directional flasher so I'm happy with the extra heads up---other drivers, no doubt, are as well.
Jack
ol trunt is offline   Reply With Quote
Old 06-18-2019, 06:42 AM   #8
Bus Nut
 
CHEESE_WAGON's Avatar
 
Join Date: Sep 2013
Location: Virginia
Posts: 340
Year: None
Coachwork: None
Chassis: None
Engine: None
Rated Cap: None
Another possibility would be a simple jumper wire from the signal flasher output or left front signal wiring to the horn. That would do it.
__________________
"Cheese Wagon" <anomaly.va@gmail.com>

Former owner - 1989 Ford B700 64-pass Blue Bird (Rest In Peace, Cheese Wagon)
CHEESE_WAGON is offline   Reply With Quote
Old 06-18-2019, 09:09 AM   #9
Bus Crazy
 
Sleddgracer's Avatar
 
Join Date: Nov 2018
Location: south east BC, close to the Canadian/US border
Posts: 1,597
Chassis: still looking for my bus
Quote:
Originally Posted by CHEESE_WAGON View Post
Another possibility would be a simple jumper wire from the signal flasher output or left front signal wiring to the horn. That would do it.
many moons ago, an old junker car I was driving had a similar fault - turned out to be a worn wire shorting out under the horn button - of course in those teen aged years of mine, the solution was to disconnect the wire and motor on
Sleddgracer is offline   Reply With Quote
Old 06-18-2019, 10:47 AM   #10
Skoolie
 
Join Date: Sep 2018
Posts: 213
Year: 2007
Coachwork: Thomas Built
Chassis: Minotour
Engine: Chevy Express 3500 6.6l
In your effort to troubleshoot this, it would be helpful to have wiring diagrams.

Thereís probably a connector on the steering column wiring harness. If thereís a short in the steering column, a continuity test can prove or disprove this pretty quickly.
Danjo is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 03:19 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.