2013 Nissan Frontier Car Stereo Wiring Guide Whether your an expert Nissan Frontier mobile electronics installer, Nissan Frontier fanatic, or a novice Nissan Frontier enthusiast with a 2013 Nissan Frontier, a car stereo wiring diagram can save yourself a lot of time. Automotive wiring in a 2013 Nissan Frontier vehicles are becoming increasing more difficult to identify due to the installation of more advanced factory oem electronics. 2013 Nissan Frontier OE Wiring Harnesses & Stereo Adapters Nissan Frontier 2013, Aftermarket Radio Wiring Harness by Metra®, with OEM Plug. For aftermarket stereo. Metra preassembled wiring harnesses can make your car stereo installation seamless, or at least a lot simpler.