Planning to run one wire to the horn relay , disconnect wires to voltage regulator and change to voltmeter instead of ammeter. The new volt meter just has a ground and " I " terminal to connect to a switched hot wire on the ignition . My question is what to do with the four wires on the ammeter ? There is the large black wire running to the solenoid with a small red wire to the cigar lighter , and on the other side of the ammeter there is a large red wire running to the bat. on the horn relay and a small black wire feeding the headlight switch . It seems like all four of these wires should be connected to continue the current to the proper places , correct ?