My 2012 came with the iPod connection kit, so it had a 30 pin connector and a 3.5mm headphone jack. I use the headphone jack to connect a Bluetooth receiver. I know guys that use this as well.
If you’re going to add air on this blocks do not use a regular tire air pump or compressor this need to be filled using a fork and rear suspension hand pump.
Here’s the one I currently have. Pump