That is exactly what I have. The 4-pin one. But the part I am getting confused on is where it says "2005 to current model year Xterra with factory tow package". It did not come with the factory tow package. I put an aftermarket "Valley" package on it. I appreciate your prompt responses. Thank you for your help. Am i looking to far into it? I do see where it specifically says I need relays for the 7-pin connector, but not the 4-pin one...