i dont think there is anything wrong with using caps. you can show me how there are studies to how they dont do shit. i just know for a fact that for under $100, i got rid of the dimming of my dash and headlights.
and ontopic...which 2 amps do you want to hook the cap up to. if you need a cap, you need the cap hooked up to the amp that is powering the bass. everytime your lights dim, its when the sub amp is grabbing a surge of power from the car electrical system, therefore not leaving much for the rest of the car.
a cap will not solve the problem with dimming if you have a 150 or 200 amp amp on your honda.

h: