Horn Relay Wiring Question
 

I'm putting back together the wiring which was removed from the car (69 Camaro ) when I bought the car and everything is now hooked up correctly but on the horn relay there is the metal terminal which has the main red lead that goes to the alternator on the main battery terminal, and the other terminal beside the battery terminal on the horn relay there is a short black lead that turns into a fusable link red wire that goes back to the fuse block. There is also a heavy black wire on the second terminal that looks like it is factory because it has the factory looking terminal, and this wire runs back right above the fuse block to a 30 amp circuit breaker but nothing running off of the other terminal on the circuit breaker. Is this supposed to be connected to something or is this just installed at the factory for future accessories? On the wiring diagram it shows one black wire coming off of the horn relay to a dot, then it becomes a red wire going back to the fuse block. I'm thinking this dot represents the fusable link , so it appears that there should only be one wire coming off of this terminal. So what is the black wire with the factory looking connector that ends at the 30 amp circuit breaker? Should I just leave it there with nothing connected to it except the circuit breaker?

mine only has one wire from it but mines a 68 .
did the car originaly have console with gauges? could possibly be for ammeter gauge?
Attachment 29711

Horn Relay Wiring Question
 

Thanks , Someone already cleared it up for me. My car is a convertible and the circuit breaker is for a power convertible top.