Posted June 19, 200916 yr Setup - 1999 Ford Expedition 5.4L2 x 15" MTX 9500 1ohm setupCrunch GP3000D Amp-----------Electrical:Big 3 of course - 1/0 GaugeStock Alternator - I JUST replaced this thing a month ago, previous alternator crapped out on me.Question: Will the D3100 battery (second) be enough to handle the electrical? I plan on getting an Optima Yellow up front.Worse case scenario, I can always just upgrade the alternator. But i'd rather not if I don't have to. I just want a good steady voltage.-----------I was planning on going with 2 18 BTLs, but found a great deal for 2 15 9500s for only 500 total - so I'm going to jump on it. Any/all answers are appreciated. Thanks.
June 19, 200916 yr Get the biggest you can fit in the front. Or maybe 2 D3100's in the back and leave the stock batt in front. Check with a dmm to see how low your voltage dips at full boogie. Only way to make sure the electrical is strong enough.
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