5 pin needed for boat trailer

[scuppari]

I'm picking up a boat tomorrow (Mem Day) and the trailer has a 5-flat.

I went to UHAUL to have a 5-flat wired in to replace the 4-flat and they guys at UHAUL couldn't figure out how to splice it into the tail lights. They made it all the way to the blue/reverse light wire but couldn't complete the job, therefore I didn't have to pay for the install or 5-flat wiring harness.

I have a 08 PF, LE v6.

If possible, would like help to complete the install today/early am tomorrow. Hopefully a little forum know-how and my elbow grease can tackle the job.

I know Nissan has the OEM 7pin harness ($60-65 local) then I need to buy the 7 to 5-flat adapter. Due to the holiday I can't order online and Nissan won't be open before I pick up the boat.