Have you changed any of your bulbs to LED's. Those blinker relays work by power draw and the LED's are so efficient that they don't work properly. You have to add a resister or change the relay to get them to work 100%.
Thanks for the info on things to check. I haven't been ignoring all the posts. My work shift is not allowing me to work on the bus. I'm hopeing that friday I will be able to work on her. All of this happened when I pushed in the hazzard switch on the steering column in stead of the dash. The red tab of hazzard switch on column was borken off but I pushed it in anyway. I drilled a small hole in the cinter of switch screwed in a screw pulled out switch, but still have the problem. Do any of you think that this has anything to do with my problem. All lights worked correctly beffore I pushed in switch?