Not enough battery power?

[Spades]

you can build your own grounding kit for free half the time, if you make friends with the people at local stereo shops, they will let you hunt through their cable scraps, and you can get assorted lenths of high quality grounding cable. i personally ran a couple extra chassis grounds, and ground by the ECU, a ground by the engine, starter, and alternator.

i also ran a ground wire from the negative terminal on the battery all the way to the trunk where my amps are located.

and seriously, dont get a yellow top. its a deep cycle battery. its what i have been saying all along. get a red top if you are going optima. you will just fry that yellow top in a daily driver car with a sound system.