Disclaimer: Installing an aftermarket radio in your Acura TL will result in the loss of factory route navigation guidance, the loss of center channel audio and the loss of certain hands-free functionality within the factory system. All these features are easily obtained in your new aftermarket radio along with an amazing improvement in sound quality.
Notice: The following instructions will help you wire together our DIY kit with your aftermarket radio and steering wheel control adapter. We will refer to the blue plug as connector A and the grey plugs as connector C26 & C40. On Acura’s from 2004 to 2006 you will find connector A & C26. On Acura’s from 2007 to 2008 you will find connector A, C40 & D(antenna connector). There is also a white plug on all Acura’s that is not used when installing and aftermarket radio it is for the factory XM unit.
| Pin | Color | Function |
| A1 | Yellow | Constant 12V |
| A3 | White(RCA) | Front Left + RCA |
| A4 | Red(RCA) | Front Right + RCA |
| A5 | White(RCA) | Rear Left + RCA |
| A6 | Red(RCA) | Rear Right + RCA |
| A8 | Red/Black | Steering Wheel Control + |
| A9 | Red | Switched 12V |
| A10 | Blue | FM Power Antenna (04-06) |
| A11 | Black | Ground |
| A12 | Orange | Illumination |
| A13 | Black(RCA) | Front Left – RCA |
| A14 | Black(RCA) | Front Right – RCA |
| A15 | Black(RCA) | Rear Left – RCA |
| A16 | Black(RCA) | Rear Right – RCA |
| A20 | Black | Steering Wheel Control – |
| Pin C26 | Color | Function |
| C1 | Blue | GA-NET + (CANBUS) |
| C3 | Blue | Factory Amp Turn On |
| C13 | White(RCA) | Sub + RCA |
| C14 | Red | GA-NET – (CANBUS) |
| C25 | Black(RCA) | Sub – RCA |
| Pin C40 | Color | Function |
| C2 | Black | Sub + RCA |
| C9 | Black | GA-NET + (CANBUS) |
| C22 | Black | Sub – RCA |
| C29 | Red | GA-NET – (CANBUS) |
| C35 | Black(RCA) | Factory Amp Turn On |
| Pin D | Color | Function |
| D2 | Black | Antenna Signal FM/AM |
| D3 | Blue | Power Antenna (FM/AM) |
The 2007 to 2008 Acura TLs do not have pin A10 instead the power antenna 12V signal must be connected to pin D3. Pioneer radios only provide one blue wire for amp turn on and power antenna connect both blue wires D3 and C3/C35 to that blue/white wire to have full functionality. Kenwood’s and Alpines offer an amp turn on wire along with a power antenna wire be sure to match each wire to the correct one.
The steering wheel control interface needs to connected to pin A8 Steering wheel control positive, with our harness pin A20 is already connected to ground. If you have any questions or are stuck please call us at 631-538-0068 or email us at info@mobilemaxcaraudio.com. Thank you for your business and congratulations on the new radio!
