well then you might not get too much help...as those are things that generally cause the dimming issue...and the only way to correct them is to upgrade them...please don't tell me to upgrade the main power supply batts,alts and cables.
that's not the question.
he said no to the question about the headlights then he ... went in to telling him about what he could doconnecting it close to the headlights? no...connecting it to the audio system MAY fix the issue...might be best to install a larger under the hood battery and maybe consider doing the BIG 3 first...