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71tahoe · 09-30-2009, 05:00 PM

I think your choice of stereo and how much you play it will have more impact on current drain. I'm pretty sure 66 is more than what originally came in these trucks. Windows won't be continuous draw so all you could have is 3 fans (oops, unless you're driving at night with the AC blasting). I doubt you will pull more than 66 amps with that (probably 10-15 amps each). Stereo????? 1000w is about 83 amps (P=I x E or I = P/E or 1000/12=83.3333)

Then you'll be hurting.

09-30-2009, 05:00 PM	#2
71tahoe Registered User Join Date: May 2006 Location: Jonesboro, AR Posts: 916	Re: What Size Alternator I think your choice of stereo and how much you play it will have more impact on current drain. I'm pretty sure 66 is more than what originally came in these trucks. Windows won't be continuous draw so all you could have is 3 fans (oops, unless you're driving at night with the AC blasting). I doubt you will pull more than 66 amps with that (probably 10-15 amps each). Stereo????? 1000w is about 83 amps (P=I x E or I = P/E or 1000/12=83.3333) Then you'll be hurting. Last edited by 71tahoe; 09-30-2009 at 05:02 PM. Reason: forgot about headlights.