Trying to Install the stock radio

I had taken out my dvd player and I am putting the stock one back in where would i get the harness to put back into the monsoon radio to hook up the speakers or are there any other suggestions to do this. the radio is powered and in the spot but the speakers are not hooked up the harness that was in the dvd doesn't fit so i assume i have to get a new harness? if someone could help out/clarify that woudl be awesome.

Ok if it is monsoon that you probably have a factory amp. which means they probably had to run a bypass for the speaker to work. what you probably need to do is try to find the amp. I think that it is located under the passenger seat. You need to disconnect the bypass and hook the speakers back into the amp and it should work