Good afternoon - I stumbled upon the way you resolved the interlock wiring issue on your bus, and am experiencing the same, also on an '03 Thomas. I was wondering if you remembered which relay you were dealing with, and took a picture of my panel in the hopes you could put your finger on it! Sorry to be so presumptious... skoolie.net/forums/f11/here-we-go-34390.html#post431830