Wiring for trailer hitch

[bigdumbanimal]

Hello all. I recently installed the Hidden Hitch on my 09 Murano. I purchased a wiring harness specifically for the 09 Murano. Based on the information I'm seeing online, all I need to do is connect the wires inline with the brake lights and the ground and I'm set. However, the instructions have a wire heading up to the battery. Does anyone have any thoughts on the necessity of the wire to the battery?

Thanks

[KJSmitty]

I can't say either way yet can say that there is a large "white" wire/plug on the left side under the trim in the aft cargo area - straight down on the left, aft of the spare tire. This is the wire several of us have used for the live "battery wire" for the wiring harness. It is live all the time and fused via the under-hood fuse panel. We however also installed an in-line fuse appropriate per instructions for the harness. The harness fuse is less in "amp" than the current OEM fuse etc. That way if you have an issue you do not exceed the OEM white wire's load rating.

Good luck

[Phantomteg]

Do you have any pictures of it mounted on your car, I keep thinking it would be nice to have but can't decide how it would look on our cars.