[Quartz]

HVT is correct and Carbeaux has a great suggestion. I installed mine Carbeaux's way and it took longer to get the tools out than it did to install.

 

[markmark]

HVT is correct that if you do have that harness in the glove box, you have all that's necessary. However, if you don't want to splice wires, try this inexpensive option to make it a plug and play deal.

Nissan Brake Control Wiring Harness for Prodigy Brake Control - 3050 - RVWholesalers.com RV Parts

I like the idea of plug n play better than splicing wires. Thanks to everyone

 

[HudsonValleyTitan]

Wow...I forgot all about that harness....lol....AND I'M USING ONE! I still have the pigtail in the glovebox. I found my plug n play harness right on Ebay too!