If the test light is off, you have no draw. Its in the charging system.
Im thinking your alternator and or regulator is bad, or your battery. The alt should be putting out 13.5-14.5 volts running with 65 amp also. 12.6 or so with the motor off. The car can run with considerable less volts or amps and not charge fully. But if the alt is not putting out those volts or amps, its bad. Auto zone checks charging systems for free.
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