upgrading battery ground and power wires?
 

well i might uprgrade my stock grounds wires from my battery and alternator to the car frame and upgrade the alternator + to the battery + wires all to 4ga wire does anyone know if this will void my warranty i want to do this to help stop the dimming of my lights due to my stereo i also want to buy an optima red top battery also will upgradijng my alt to a higher output alt void my warranty if so that sucks guess i would just need to install a cap.