Join Date: Mar 2002
Location: Austin, TX, USA
Re: 69 Camaro console gauges w/ Alternator conversion kit
There should not be any difference. The console ampmeter is simply a millivolt meter connected in paralell with the wire between the battery junction block and the horn relay distribution point. When the voltage on the relay is a few millivolts higher than the battery, the ampmeter reads 'C', and if the battery is a few millivolts higher than the relay, the ampmemter reads 'D'.
Beyond that, your new alternator can likely put out 2 to 5 times the current of the old one. It would be a good idea to upgrade the wire between the horn relay and the battery terminal block to an 8ga. That will make for a better current path to and from the battery and will reduce the deflection of the ampmeter needle a bit to compensate for the additional charge capacity of the alternator.
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI