Hello and thank you in advance for any help you can provide me. I have a 1987 xlt lariat f150, 4 speed manual. This truck doesn't have rear speaks, the stereo doesn't even have a rear/front fade which tells me there were never rear speaks.

The problem is I'm trying to install a cd player and I can't seem to find where the rear speaker wires are and which ones they are. I found this guide online but it appears to be off because there is only one Pink/Blue wire in the harness currently. Also I can't seem to find where they ran the rear speaker wires or if they even bothered running them to the back of the cab. I can't even find where the heck the harness goes to other then the two sides door speaks. I found a group of wires ran under my driver side floor panel but these don't appear to be the same colors as my stereo so I'm guessing these are just for the interior light.

This is the guide I'm referring to
http://www.modifiedlife.com/1987-for...-wiring-guide/