Hey Kyle, that'll depend on the 2nd amp's power. Your stock alternator can handle only so much power. If they both total around 450W rms, then it should be okay. Adding a capacitor will give you a tight bass and less light flickerings. Just make sure you have good ground for the amps.
do the amps always have to be the same brand for example.. i hook up 1 brahma 12 to a jbl 1200.1 and also a rf1001bd for 1 vr comp 15" 500w at 4 ohms would this work? 2 diff kinda amps