Oh god Cypher.. Talk about Ghetto, you just made me cringe again xD i remember being a teen and trying mains install cable for a laugh but.. Ugh what a bodge! You need flexible core for car installs really, when i've helped wire them for friends i always use high guage, proper flexible cable.. If they get 8AWG kits i laugh at them to be honest. I have 'proper' speaker wire here that's lovely and flexible, has a cross section of 2.5mm which is actually 8AWG but i mean for 12V DC power the lower the guage the better.. Grey stripped install cable stripped or not looks amateurish and shitty dude xD ewwwww.. Brings me back to the days of using some cooker wire to temporary fix an alternator feed in my exes old Fiesta MK3.. God, that car was awful.. But yeah as a side note if i ever needed anyone else to rewire something for me instead of doing it myself i'm not letting you anywhere near it lol :p
Funny though, i used to love Kenwood systems, i have an old stack system in the spare room that's from 1988.. And unlike a lot of later Hi-Fi systems, not just restricted to Kenwoods, they use real transistors in true push-pull instead of irritating integrated chip amp ICs.. *shudders*
Although your idea of using a little bit of solid Copper core as a bridge for the PBC isn't a bad idea, really.. Depending on the size and the location i tend to use little copper bars instead of round wire just to be awkward lol! Or i flatten the round core, just to be different really.. Although the flatter surface area helps connecting it to flat pads without having to rely on a ton of solder to fill any gaps and transfer most of the current..
