tufbuilds

Hi folks, I am new to the forum and would first like to extend my gratitude to the site owners and community for helping others like myself. I bought a 2000 Acura TL and the navigation screen was cracked and the Stock Radio was missing. I replaced the Stock Radio along with a Navigation system I purchased on Ebay. The unit came with both the front screen unit and the back DVD unit that goes in the trunk. I wouldn't even have bothered with the Navigation screen if it weren't for the AC controls being on this display. Is there anyway for me to get the front unit working without the back unit being connected in the trunk?

The person who had the vehicle before me cut the harness where the dvd navigation unit goes in the trunk so I would need to find a harness connector to install this correctly, Any suggestions or advice? Thanks