Assuming this is a Mach 1 based on your member name.... Try powering the horns directly from the battery. This will tell you if the horns are bad or if there is a problem in the horn circuit. If the problem is in the horn circuit, first clean the connections at the rimblow switch under the center steering wheel pad. Apply power to these contacts to see if the problem is a) in the circuit between the steering wheel and horns or b) in the rimblow switch. It sounds to me as if the rimblow switch is going bad; is it the original switch? I had similar problems with mine. I went ahead and restored the entire steering wheel while I was at it. The best switch, in my opinion, is the Daniel Carpenter version.