Replacing the stock radio in a 05 tacoma

Ok, so some background info before I start. I have a 2005 Tacoma Prerunner with the JBL speakers and the stereo unit with the cd changer and steering wheel control. Now, I took out the stock stereo unit and have a XML8150 DAUL 240 WATTS unit to replace it. The main reason I wanted the change was to plug in my Ipod... after researching, I found there was a simpler and less expensive way to achieve that, however I invested too much time and money to turn back now. I also bought a generic wire harness for 89 and up Toyotas, but it isn't compatible with any of the harnesses from my truck. So, I figured I'd be a man and splice the wires myself. The only thing is I have no idea which wires do what. The wires from my new unit do not match the colors on the harness that came with the new unit completely, so I didn't go splicing and dicing any cables yet. Is there anyway to get an easy to read schematic of the wiring from the truck? Or does anyone know if there is a very inexpensive wire harness adapter I can find readily available (I want to get this baby in before I hit the road tomorrow)?

 

So theres no schematics to help me get this done today/without spending any more money?

 

Yeah, I agree. I'll wait until I get my beater to start dabbling in the dark arts of wire splicing. I really don't want to mess up something I'm trying to keep for life. Thanks for the help. At least I know what I'm looking for when browse the the stores.