I have a 04 ford F150 with tow package. I have learned that I have a 110amp alternator, and I have no idea if it is at idle or at some certain RPM. I am pretty sure I need 192amps to run my equipment (added amp fuses @ 130amps + head unit @ 15amps + added equipment fuses @ 17amps + average vehicle draw @ 30amps = 192amps), so that leaves me 91amps short. I am now shopping for a high output alternator and I found one on Ebay that states that they are selling a 200+ high output alternator but the output at idle is 105 amps, and that the maximum output of 200+ amps is achieved at 1200 engine RPMs. Would this be a sufficient alternator? Or should I shop somewhere else. I am concerned about this alternator being only 105 amps at idle where I need 192 amps to operate. At idle do high output alternators operate at lower amp as specified?
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ADAM
You're not going to find a 200A @ idle alternator, not for any kind of cheap money...
90% of your listening is probably above 1200 RPM anyway, so go with the one you found on FleaBay. Be careful, tho...
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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."