I am still tracking this down, but I believe it's going to be something in the steering wheel circuitry. It has a Flaming River steering column. I pulled apart the guts and noticed a really mild current passing through steering column. No idea where that is from, but I am going to guess it is from improper installation or maybe the horn.

Thanks for the lesson thus far, it is really interesting to see how this circuit completes. I'll keep you posted!