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Message: <blockquote data-quote="Old_Slapper" data-source="post: 8886435" data-attributes="member: 690458"><p>I have seen lights dim with a 250 watt amp.  It all depends on a couple things.  What size is your alternator, are your battery connections clean and solid, and is your battery good.  It looks like your alternator is about 120 amps.  Your amplifier is pulling about 30-40 amps.  Try checking your battery and connections.  If you wish to totally get rid of dimming lights, you will have to upgrade your alternator.  A band aid would be into install a quality 5 farad capacitor.  If you bump for long periods of time, then get a bigger capacitor.</p></blockquote><p></p>

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