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AMP Meter gauge wiring is very simple. All of the cars power users should have their power routed thru the AMP Meter, if not, you won't be getting a true reading on the gauge. One large wire in and one large wire out of the gauge (excluding lighting)and if you install the in & out wires backwards, the gauge reads backwards. i.e. Headlights "use" power not "make" power - the needle should move towards negative when the lights are turned on.
Regarding the alternator sizing, Do you have any big power users car? Your cooling fans are your biggest users, then headlights, parking lights, etc. The MSD box uses very little power, the fuel pump (if electric) usually between 2 and 4 Amps (i.e. Holley red-blue-black) Most wiring systems on these cars are not even sized for 100Amp service. Even on factory built cars.
3 fans for engine cooling? Check their Amp usage...progressive activation I assume?
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Wiring Diagrams: SPF MKII, MKIII, GT40, CSX7000, CSX8000, Corvette Grand Sport, and Shelby Sebring, Bondurant & Cinema Tribute Cars.
Owner’s Manuals: SPF MKII, CSX7000, CSX8000, Sebring, Bondurant, Cinema Tribute Cars $ GT40’s..
Large, easy to read and trace schematics with part numbers, wire colors, wire gauge, fuses, and electrical upgrade information. Trouble-shooting and replacement part numbers for those roadside repair adventures.
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