The Roadmaster Falcon 2 Tow Bar, part # RM-520, and Roadmaster MX Base Plate kit, part # 3136-3 will work just fine with your 2005 Saturn Ion. If you will be towing your Saturn behind an RV or Motorhome, you may not need to have a brake system for the Ion. The Ion is small enough and light enough that an RV or Motorhome has sufficient stopping power for itself and the Ion, however, brakes are a good idea and are required by some state law and by some RV Manufacturer warranties. I will link... view full answer...
To add a trailer connector to the back of your 2007 Chevy Monte Carlo LT you will need to hardwire in a harness using # 18252. This harness comes with a circuit tester which you will use to determine the functions of the vehicle tail light wiring to install the 4-Way.
On the 4-Way, the white wire is ground and will attach to a clean bare metal surface. The yellow wire will connect to the vehicle's left turn and brake light wire. Brown will connect to the vehicle's running light/tail light... view full answer...