I have my dash and the wiring out of my 78 Firebird, I am going through my whole electrical harness. I just got done and started doing an audible test on the wires. Circuit 2 ( Ignition, horn relay and bulk head 12awg, 10awg red), When I test the circuit with my volt meter set on audible, I get a tone, then I touch one prong to the ground (all grounds on dash) I also get a tone, is this normal? I checked all wired and NONE are exposed or touching. It's not doing this on any other circuit, just on circuit 2. Circuit 2 should be battery circuit.