2006 tundra Access Cab, wiring in aftermarket radio cannot find wiring color code schematic

I'm wiring in an aftermarket head unit in my 2006 Access Cab Tundra. The stock radio is not JBL /Fujitsu. Every color code schematic that I have looked at on the web matches up but for a handful of wires. After throwing away over $60 dollars in harness adapters that do not fit, I cut the harnesses off that went to the stock radio have all the new wires connected except for the speaker wires. I need HELP!!! Tired of riding with no stereo in the dash! I attached the wiring diagram I used but there are a couple of the speaker wire colors that don't match up. So far my new head unit powers on with ignition and illumination lights working, functions but no sound due to not knowing the right oem color code for the speakers.

 

All the charts I've seen show similar colors. The sure fire way to figure it out is to use a meter and test from each speaker.

 

ok, I will give that a try...will see what happens!

 

The speaker wires are located at the factory amp under the rear passengers seat. It is signal wires at the dash location and will not give you any sound you must now bypass the amplifier and run speaker wires up to the dash.