EVIC console Help needed!!!

I have a 2004 Liberty. I just installed an EVIC console. Checked the temp sensor and there was already one installed. Turned on ignition and compass came on but only dashes for temp--. Checked connection and all was ok. Ran through all other functions and all seemed ok. Then the OBD II light came on on the dash. Checked all connections again and all seemed ok. I then disconnected all the wires that I installed. Now the OBDII light is still on on the dash. Any ideas? HELP PLEASE!!!
Bob T

stating the obvious: ensure that your temp sensor was installed correctly...and ensure that it is the correct temp. sensor located in front of the radiator at the front of the vehicle. It is unusual that there would be a temp sensor there if there was no EVIC since to my knowledge the temp sensor in question is only used for monitoring external temp. for the purpose of displaying it on an EVIC or some other panel. I could be wrong, but...

Also, ensure that you didn't accidentally short-out the wires leading from the EVIC to your power supply. This could have damaged your BCM. Also, check for blown fuses and replace as needed.

Other than that I am not sure what could have caused the problem....

I made up the wire harness ahesd of time and am pretty sure it is not shorted. I did not check any fuses. The # on the temp sensor is the same as the one I bought. I tried both and no difference. I had some one else e-mail me with the same problem. He did not say what year he had. He did say the EVIC he is using is a 2004. If I unplug the temp sensor while the engine is running the check engine light comes on. It may be that they are useing the sensor for something else also.
Bob T