What colors are Positive and negative

[ZombieGT66]

Hi guys, I'm tryin to install some new speakers and I've forgotten what colors are for positive and which are negative for the wiring. I know I could open the dash up and look on the back of the head unit, but I thought I could save myself some time right here.... and I'm being lazy:D

In the doors they are red and black which i think i know what is + and -, but in the bacl they are blue and ummmmm yea

[tenspeed]

Old wiring for DC was red (positive) and black (negitive).

The new world wide standard is Brown (positive) and light blue (negitive).

[slimspaydee]

red=positive black=negative and thats always with car stereos

[ZombieGT66]

ok guys i think I've got it now, thanks for the help

[Chain]

WOW.