Product details:

The Blue Ox 4 Diode Taillight Wiring Kit enables your towed vehicles taillights to operate in unison with your RV's taillights. Eliminate the hassle of stringing magnetic lights that could harm your cars paint with this diode kit. The 4 sealed moisture resistant diodes prevent electrical feedback from entering your towed vehicles standard wiring keeping your cars system safe. Includes 26' long 4-wire cable harness, 4 sealed diodes, 3' ground wire, 12 female crimp terminals, 1 ring terminal and detailed instructions.