RV Pirate - yep the front AUX is the one we used. It works out nicely and allows you to disconnect should you need. I ordered a cable with a 90 degree connection. I ordered this one from Amazon
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1. I then drilled a hole directly under the unit and fed the cable back through underneath the drawer. Worked GREAT.