I am in the middle of installing water temp and oil pressure gauges under the radio but when I went to pull the old aftermarket radio out it was not wired up using a plug. All the wires were spliced into other wires. There are two plugs behind the radio which are not plugged into anything. I figured one was the factory radio harness but all the harnesses for installing aftermarket radios from best buy, circuit city etc..dont match either plug. What are those plugs? How can I add a harness for the aftermarket radio instead of having rat fu**ed wires behind the radio? 

Just go buy the new harness from bby, wire it to the radios pig tail and put it all in..