Reddit reviews Metra 99-7581 Niss Pathfinder/Frontier 05-Up Dashkit

So, there is a little extra work involved to wire up the factory amp, but it's pretty straightforward. Basically, what you'll end up doing is using the new head units RCA pre-outs to get the signal to the RF amp (rather than use the head unit's internal amplifier). To do this, you need to get a special adapter to convert the factory harness into an RCA connect (or, you could technically attach RCA connectors to the factory wiring, but that's kind of hard to undo should you ever want to put the stock setup back in).

Anyway, here's what you need:

• Metra 99-7581 dash kit
  
• Metra 70-7551 amp integration harness
  
• Metra Axxess ASWC-1 (if you want steering wheel controls)
  
  I know Scosche (and probably others) make the dash kit, and there's a few options for steering wheel control interfaces, but I've had good luck with Metra products. For the amp harness, the Metra is the only one I could find.

https://www.amazon.com/Metra-99-7581-Pathfinder-Frontier-Dashkit/dp/B000K4YNUE/ref=sr_1_1?keywords=Metra+99-7581&qid=1563074311&refinements=p_85%3A2470955011&rnid=2470954011&rps=1&s=gateway&sr=8-1

Reviews are pretty horrible though. There are other companies that make dash kits. J