If you want to install an aftermarket radio in your 2009 to 2013 Acura TL or TSX you will lose the ability to see the climate control status. You can still control it but if you want to see the values of the temperature or the fan speed indicators you will need to swap the navigation display screen to a non navigation display screen. The process of swapping it is relatively simple you will just need a non navigation screen, the climate control vents and the harness listed on this page.
This harness plugs right into the connector next to the green connector on the navigation control knob. Then you run it up to the climate control display and you are all set. Just be careful when tucking the wires you do no want to pinch anything. If you are looking for the vents or climate display the parts are as follows. You can find these parts on eBay. The vents on the Acura TL are different on the navigation and non navigation models.
TL climate screen – 39710-TK4-A02
TL vents – 77270-TK4-A010
TSX climate screen – 39710-TL7-305