Hi everybody, I am new and this is my first post.

I have a 2002 Blazer with the standard AM/FM, single CD deck (no amp or accessories). I woluld like to install a headphone jack but can not figure out the wiring or understand the color codes from the plug in the wiring harness. Can anyone help me identify which wires I should tap into for just the Left & Right chanels for the front speakers? Thanks in advance..........Zach

 

Moving to 'Audio/Visual' for better responses.

 

left front speaker wiring is Brown(+) Yellow(-)
right front speaker wiring is Lt Green (+) Dr Green (-)