I was checking to see if anyone could help me out, I bought a M6040 cab model and the radio and interior light was not working when I went to look at it. The guy said his mechanic couldn’t find where to look after the fuse box but he could jump the wires around in the fuse box and it would work. Is there another junction that I could check out? I tried to find a wiring diagram online that would show me but I couldn’t find one. Thanks