by kingcorolla » Mon Sep 13, 2004 5:48 pm
hey dude,
this is were a multimeter is PERFECT to have,
for an earth, just find a good earth behing the dash, eg. steel support bracket. And then test for continuity between the earth, and the stereo wires, watever one beeps, thats ure ground.
for power, u should have a common 12v (mite be red), and a ACC 12v(mite be yellow), test for 12.4V with wires and ignition on, and off, to test for both power wires.