Alternator

I just got two alpine mrd 500s and i've got a rockford 500x that i'm switching to an alpine mrv 540 4 channel amp what i'll will i need to wire this...right now i've got 4 guage running to the back to a distro block...will i need a new alt, extra battery, cap...its going in a 2002 ford explorer...and i don't have neons or any other lights...and it powers my 450s and 500x rockford amps right now without any dimming...I also have the tow package if that helps..

If your lights do not dimm with bass hits, then you should be ok. I have a 120AMP alt, and my lights still dim a bit with my 400Watt Kenwood. They sell those .5farad capacitors that are 16V, and they hold the necsessary charge for amplifiers. The drain is right from the Capacitor, rather than the battery.

If you want to run the stuff with the car off, another Battery in parallel will work, but you still need an isolator block, because NO identical battery is the same, no matter WHAT. SO, if you have TWO of the same batteries, the current will never be the same between the two, so isolate them.

caps are great BUT, a 200 amp alt will cure any power problems with the amps you listed. you have to have the power to charge the cap. caps don't generate power they store and release it in mili seconds. a cap will make your old alt work harder.PM Big Purds he has a alt guy e-mail that will help you.

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Big Dave

Hey everyone...anyone know where I could get an alt for a 2000-2002 Hyundai Accent 1.5 Sohc? Putting in new stereo and just want to be safe for power..was thinking about putting in voltmeter to watch power and it's kinda showy.

ask big purds

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Big Dave

Cheapest altenator upgrade that will last is to get an Ambulance alternator, they will last as long as a regular alternato but push about 200 amps abd can run upto 16volts (most equipment will handle 15.5 volts saftely)