The Tekonsha ZCI Circuit Protected Vehicle Wiring Harness with Installation Kit # 119250KIT and Curt Powered Tail Light Converter part # C59236 are both great options for a 2014 Volkswagen Jetta SportWagen. The # 119250KIt attaches to your vehicle without splicing into your current wires, while the # C59236 will require you to cut and splice to attach it. view full answer...