I confirmed with our Firestone representative that the # F4182 Coil-Rite kit could be used in temperatures as low as -40ยบ F, so you'd be fine and wouldn't need to remove the system in the winter. I've linked to a product demonstration video featuring the Coil-Rite kit. view full answer...
The power/fuse connector you were referring to is not available separately so if you don't have that part you will need to purchase a new harness, the Curt T-Connector Vehicle Wiring Harness for Factory Tow Package # C56102.
This is a fit for your 2007 Mitsubishi Outlander and I've added a link to a video review as well. view full answer...