is there a fuse or relay for the horn on this bus, I have checked under the cover under the shifter and on the access panel under the drivers side window but do not see anything marked for the horn. I can get 12 volts with a volt meter at the horn button but it will not lightup a test light. any ideas. Never had this much trouble with a horn.
Ok when I pulled the cover to access the multiplex I found that where the B1-104 wire is not there the connector has a plug in it like it was never in that position, the B2-109 wire is in the B2 connector,Is there another place that the 104 wire would be connected. I have looked in the bluebird access wiring diagrams for my body number but did not find anything helpfull.
off the central states bus website same pic bbd gave give those guys a call there very helpfull
Buses that have experienced horn failure can wire in a conventional relay circuit to avoid replacing the multiplex module. If it has been determined that no out put from the module to the horns on pin 14 connector B1 is present and pin 9 on connector B2 is grounding the circuit when the horn button is pressed use the following parts and schematic to make the repair. I you have any questions call our technical service department at 1-800-825-8273.
From what I can tell, he pulled the horn circuit out of the multiplex and put in a dedicated relay. From Central States Bus:
VISION HORN FAILURE Buses that have experienced horn failure can wire in a conventional relay circuit to avoid replacing the multiplex module. If it has been determined that no out put from the module to the horns on pin 14 connector B1 is present and pin 9 on connector B2 is grounding the circuit when the horn button is pressed.
If you can't figure it out, check with your servicing BB dealer - looks like several dealers used to have the info posted, but they're all dead links.
OR... you could replace the multiplex unit.
"Growing old is mandatory. Growing up is optional."
2007 vision horn
Posted - 04/03/2012 : 7:33:17 PM
