Trailer Wiring harness install for a 2013 CX-9 Touring

Installing a wiring harness in my 2013 CX-9 Touring. (not AWD, and not GT)

I believe I need the Main Harness: 0000-8E-N03B
and the Jumper Harness: 0000-8E-N04

From the Mazda site:

Main Harness. For use with Hitch 0000-8E-N11B on vehicles with Radiator Code CA26 / VIN Code Z18. Jumper Harness also required (0000-8E-N04). Pull your toys to your favorite destination with this Class II-rated receiver designed especially for your Mazda CX-9. Up to 3,500 lbs towing capacity. 4-pin trailer lighting connector sold separately. See your Mazda Dealer for details.

Click to expand...

Mazda USA Parts

Also, PLEASE tell me I can tap into a nearby 12v power source, I really do not want to run a wire all the way to the battery. please

Any other tips? Does the Touring come with the Harness Pre-wire connection or just the GT/AWD versions?

Also saw the Curt Trailer Wiring Harness, but heard the Mazda was better (?)

Thanks!

I have the GT and this was the only wiring I needed:
https://www.amazon.com/dp/ (commissions earned)

I know this doesn't directly answer your question but hopefully along with someone else's Input it'll all come together for you.

Thanks!

Hoping that's all I need.