alternator and radiator question

[tucsonjwt]

As long as your truck starts OK I would not change your alternator. I put in a 160 amp alternator and it did not change the reading on the alternator (about like yours). If you have mega blaster amps and boom box then you might need a higher output alternator. The stock alternators are like 64 amps and seem to do the job fine. I think the gauges are only approximate in their readings anyway. A/C will drop the output but should not affect the state of battery charge over a long time period. I have also read that higher amp alternators require larger gauge wiring.