In car audio, always use stranded wire (more strands = more flexiblity and in some cases a few companies have much more than others, yeilding in more potential current flow
) Solid wire can crack or break in an automotive application
In a very short time, we'll have a solution for thick round cables taking up too much room. But I must say, the Contour has a decent amount of room for wire, I have several large gauge cables running down both sides without a problem. You just have to be a bit creative
Also, wire gauge should be determined by your amps current draw (listed in the owners manual thats never opened
) or your fuse rating. I cant stand seeing 2000 watt 4ga kits, to get true 2000 watts, your well over 120 amps (theres a forumla, but its late and im beat) I would not recommend 4ga wire for a 20ft run at 120 amps. Another thing is length is very important, if you had a 2ft run, then 4ga would be fine, over that long run you will see a voltage drop at the amp.
Hope that sheds some light for ya
