Aftermarket Stereo Install

[jm.ray91]

I'm trying to install and aftermarket stereo into my 97 mounty and when I bought it wires were all cut for stereo. Really confused on how to hook up my stereo cause colors of wires do not match at all.
First harness
Tan wire
White with red stripe
White with orange stripe
Purple with blue stripe
Orange with black stripe
Brown
Yellow
Grey
Blue with black stripe
Green
Black
Purple
Purple with white stripe
Light blue
Green with red stripe

Second harness
Yellow
Black
Blue
Green with black stripe
2light blue with red stripe
Green with purple stripe
Black with green stripe
Unsure what colors match up to car has a factory amp in rear quarter panel and rear seat audio