I'm having trouble getting my tail light/dash light to work properly on my 75 xs650. The po messed with the wiring but it all looks correct compared with the diagram. In the third ignition switch (park) position the blue wire gets power, tail light and dash lights come on. In the second position (on, run, etc) the blue wire doesn't get power, no tail light/dash light. I took apart the switch thinking maybe dirty contacts but in the on position the blue wire shouldn't get power from the switch apparently, same thing looking at the diagram. So wth powers the blue wire in the on position? Is it supposed to tie into the brown down the line? Doesn't look like it from the diagrams I've look at.