Audio Systems: Wiring for a 1967 Mustang, 1967 mustang, forturne

Question
Ok. So I have just recently purchased a new pioneer stereo and I
am trying to install it on my own. Although i am having a hard
time figuring out which wire goes with which. Can you help me?  

Answer
I can, we're going to have a tough time finding the color codes for a 67'  so I would recomend using a meter to tell you what's what.  do you have a meter?  If not get one at walmart or home depot or any auto shop.  I got mine for 20 bucks and its fine so dont spend a forturne
write back when you have one, it's really the best way