If you have a few bucks I bought some LEDs for $25 at cartoys a couple years ago, they sell them on amazon also though. The brand is VisionX multi color leds, they have a module that comes with the LEDs that changes color (7 colors) and also has three flashing patterns and a setting to light up with music. Also has a dial to adjust how sensitive the module is to sound. Check out my YouTube channel I've got a video of them on there and go buy some if you like them. I loved them! Ryon7966 is my channel. Or you can search RynoHarris and some videos should pop up. And as far as wiring them in they come with a 12v cig plug. I cut it off and ran the positive to my remote turn on at the amp and the negative to the ground on my amp. Easier than trying to get LEDs hooked up to a amp or speaker to pulsate and gives you the option to turn them off or have them just solid colors when you don't want flashing
"Never argue with an idiot, he will bring you down to his level, and beat you by experience."