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fhcjr1
New Member

USA
1 Posts

Posted - 01/03/2011 :  06:09:52 AM  Show Profile  Reply with Quote
I have a 2003 Blue Bird 14 passenger Bus on a GMC G3500 chasis. When I open the passenger doors the emergency lights don't come on. The stop sign does not swing out. If I hit the "Manual " button the lights work and the sign swings out. When I close the doors the sign swings closed and the lights stop flashing. I don't have a wiring diagram. Does anyone have a wirng schematic for this system? Does anyone know what the problem might be?
Thanks.
Fred

Thomas Ford 85-16
Top Member

USA
4177 Posts

Posted - 01/03/2011 :  08:57:55 AM  Show Profile  Visit Thomas Ford 85-16's Homepage  Send Thomas Ford 85-16 an AOL message  Reply with Quote
If the bus has a Weldon 7000 or similar warning light flasher, the fix may be as simple as moving the door switch wire from the terminal labeled "Flash Red After Amber Only" to the terminal labeled "Flash Red When Door Open." My state of Michigan prohibits the reds from flashing simply because the door opened...the warning lights must be purposely activated using the amber light start switch. Other states (sounds like yours is one of these) require the reds to flash whenever the passenger door opens.

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Thomasbus24
Administrator

USA
4507 Posts

Posted - 01/06/2011 :  1:35:07 PM  Show Profile  Reply with Quote
Agreed with above. Odds are you have the Weldon 7000 which is a fit-all unit... http://commerce1.cera.net/tacbusparts/includes/content/image.asp?img=/tacbusparts/images/products/pr_2666_pi_919.jpg&wid=400&hid=199

Note terminals 9 and 10. Opening the door provides ground to one of these. If legal to do so, move the wire going to 9 to 10 (or if both have wires, switch em around). That should change operation of the system.

If you don't have a Master switch, you'll need one, wired to control the +12v circuit to terminal 2 as not to have the lights flash when not wanted.

If you want to be able to operate your reds without opening the door or using the ambers, utilize the override provision by using a DPDT switch, one side providing +12v to terminal 1, the other side grounding terminal 10.

Edited by - Thomasbus24 on 01/06/2011 2:00:05 PM
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