Nah, just added the 1 farad capacitor, but I got that when I had a 760 watt amp and a 444 watt amp and it did great.   I need a bigger capacitor now, though, because when big bass hits the lights dim again.   Capacitors fix everything to a certain degree.   If you run one, you could add a nice system.   Just dont go buy the best brand you can, its just a capacitor, I got my Stinger one cus I traded a CD player and $20 towards it at a store, and Stinger is competition stuff.   But, Id at least say find a brand you have heard of

I soon plan to have those truck box speakers moved.   I want custom boxes on each side of the rear bench seat that will also be arm rests.   After that, Ill have to find a better spot for the amps other than under my seats cus people would step on them a lot, the one amp is a little longer than 2 feet.