grant steering wheel/horn problem

[kawahawk]

Here's my problem. I installed a grant steering wheel on my 72 following their instructions. when i went to rehook the battery cables the horn was on. I thought I would just unplug the connection to the horn button and figure it out tomorrow. no dice horn still stuck on even with horn button unhooked. I have come to terms with the fact that I am incompetant with a wrench but I thought I could handle a steering wheel. any suggestions on what I might try??