Hello Gerard. The Curt T-Connector Vehicle Wiring Harness # C56314 is exactly what you will need to tow a utility trailer with your 2015 Kia Optima SX. The 4-flat connector is very standard for utility trailers. Any trailer that does not have its own brakes will use the 4-flat. view full answer...
Yes, both the Curt # C11025 and Tekonsha # 118453 will fit your 2012 Kia Optima. If you're planning on towing you will also need a ball mount like # 36065 along with # 19256 for a 1-7/8" or # 19258 for a 2" ball.
I have attached some installation videos below for your reference. view full answer...
No, I am sorry Jim the Softride Hang2 2-Bike Rack item # SR27041 does not work with tandem bikes. The only option I have for a hitch mounted bike rack, that is compatible, would be the Swagman XC-Extended Bike Rack item # S64650-EXT. You would need to make sure your bike's wheel base is 69" or less and weighs 35 lbs or less.
The Swagman XC-Extended Bike Rack item # S64650-EXT also mounts in 1-1/4" Class II and 2" hitch receivers. It weighs 38 lbs. view full answer...