The Rizoma wiring kit with resistors (2 W / 100 Ω e 3 W / 47 Ω) is needed when fitting Rizoma turn signals (and Rizoma mirrors with integrated turn signals). We recommend checking the technical specifications before purchase. Each kit contains 2 sets of wires. To fit 4 turn signals, it is necessary to purchase 2 kits. Do not use the resistors included in the packaging Rizoma turn signals. Without the turn signal cable kit with resistor the Rizoma turn signals do not blink correctly