I have a 1993 Maxima. I'm getting an infinty basslink (200 watt class d) and a Rockford Fosgate 400.4 4 channel Punch amp (50x4 rms). Can I use these componenets on my stock car? Crutchfield said my alternator or something can't handle it. I'm 17 and I know little about cars, somebody fill me in on if my car can handle it and if it can't what can I do about it? Thanks

 

Just get a power cap you can get them cheap on E-bay. I would suggest a 1 fared cap.

 

Your car can handle it, a cap can't hurt but all you probably need is a good battery.

 

Thats a relief. Thanks for the info.

 

The battery only supplies power when the car is not running. So this is a mistake in logic. However, the larger battery will allow your electrical system to "breathe" because they won't bog the alternator as much as a smaller one. Downside, is that if you run your system (or lights for that matter) for a while (long time) with the engine off, the bigger battery will hurt in this situation.
After you complete the installation, start the car, turn on the headlights, and the A/C. Run the stereo fairly loud (or a bit louder than you would actually play it under normal circumstances), if the headlights dim, you need an electrical upgrade. The cap and bigger battery are good steps, but if you get dimming, you should look into either getting a new alternator, or getting it rewound.
Anyone agree? Disagree?