one more quick note after the installation i couldn't get the left turn blinker on the trailer working. both blinkers on the car worked, and on the trailer the stop lights,running lights and and right hand turn signal worked but not the left hand signal. I checked fuses in the glove box and engine compartment and found nothing wrong, then after a little more internet research i found that Nissan placed the fusses for the trailer left and right turn signal in the F.....ing dumbest possible place (IMHO). To get to them i had to take off the knee panel under the steering column which isn't hard but takes a little time---almost 10 minutes to get to the stupid little fuses here's a picture of them.