Today on our 2010 Nissan Xterra we're going to take a look at and also show how you to install the Tekonsha T-One vehicle wiring harness with a four pole flat trailer connector. Part number is 118525. Now here's what our wiring kit's going to look like when you pull it out of the package. See our four pole trailer connector here, that's going to be what we're after. This is going to give us right… see more >