i need help

[VC1978 10+ year member]

I have a 90A alternator and I have 2 amps a 1000 and a 400 and how much improvement would a 150A alternator be? would 150A be enough and if so would it be enough if i throw another 1000 watts in. im worried about cuz my lights dim

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[SAG3 5,000+ posts]

i would do a 200A so that there's more room for upgrades

 

[ssj2xxgotenxx 10+ year member]

i would do a 200A so that there's more room for upgrades

x2 b/c it's always better to have overkill than underkill

 

[iceteebone 5,000+ posts]

headroom is always nice to have. i have a 250 amp alt for my kx1200.1 then that way if i ever want to do a huge system i got the power at hand, also do the big 3 of course

 

[PowerNaudio 10+ year member]

i would look at the fuses on the amps them self. add them up, up grade your alternator to have 90amps, " like your current one" plus what ever the amp fuses add up to plus a 10% to 15% of over head.

example. 90 amps of current alternator + lest say 120 on the amps + 10% to 15% of the sum of both of the values for over head.

you cant go wrong that way.