i know i probably need a cap but im not sure. i cant have my car off and listen to my system or my battery will drain in 5 min, and when car is on still all my lights blink and dim when system is on. i have 2 Alpine Type X's and a Orion 2500D,and i need tweeters because its not loud enough hen subs bang. which tweeters are good?
You have a severe case of power problem. Do not operate any further without alternator upgrade. You not only will kill the starter battery, but the alternator will also die, along with other electrical components in the car. In other words, it'll cost you tons to get it fixed. Orion 2500D needs at least 120A, probably up to 200A. Do not purchase a cap unless you upgrade your stock alternator to HO model.