Mate's asked me to help him out and fit his system to his Passat. He's got a 500w RMS mono amp for the sub, a 2x75w RMS amp for the front and a 2x30w RMS amp for the back.

He's got the distribution blocks but has asked me to pick up a new power cable as he left the old one in the old car.

Anybody give me an idea as to what guage of power cable I need to grab, don't want to get it wrong on somebody elses car