rockford fosgate rfk-hd14 amplifier wiring kit for 2014+ harley davidson road glide & street glide rockford fosgate get the most out of your tm400x4ad amplifier when pairing it with the rockford fosgate rfk-hd14 wiring kit. the kit is compatible with the tm400xad power marine amplifiers in 2014 and newer harley davidson road glide and street glide models. the kit features full spec cables that meet or exceed american wire gauge requirements that provide the utmost reliability. the wires are constructed from 100 percent pure crystal-oxygen free copper in order to maintain the highest performance. with a plug and play design, enjoy a quick and easy installation process so you can get back to the tunes instantly. included in the all-inclusive kit is a heatsink, brackets for either a bat wing or shark nose fairing, and wiring harnesses for setting up the amplifier. also included are boom! audio bypass plugs and a loop-thru harness for an optional dsr1 signal process setup. maximize your music listening experience while on the road with the rockford fosgate rfk-hd14 audio amplifier kit.