would it make sense that my subs dim teh lighting in my car when they hit simply because the point on teh frame that my amp is grounded to is completely PAINTED? should i ground it to bare metal? will it make much of a difference?
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Go for it.

It's cheap, simple and you'll find out if your right.....

 

yeah youre supposed to sand down the area youre grounding to

 

Definitely grind down to bare metal. You still may notice dimming of the headlights though. Mine dim a very little bit if I have my high beams on, and very powerful bass going. I can't really notice it at all with low beams.

 

Agreed. Sand it down to bare metal and make sure its a good, solid mount.

Some dimming is gonna happen at high volume. Bass hits suck a TON of current.

Plus you gotta think, as great as the Accord is, its still a little 4 banger with a tiny little alternator.

 

You could always install a capacitor, but honestly... it's really not necessary. The ammount that a well wired setup with a good battery/alternator will dim your headlights is not enough (in my opinion) to warrant spending the extra money on a capacitor.