World's Largest Aftermarket Motorcycle Parts and Accessories Superstore!


Gold Club Members Get 15% Off Your Entire Order!

Pro-One Wiring Harness Kit

Pro-One  Wiring Harness Kit
Product may vary from photo(s).

Everyday Low Price: $199.99

Gold Club Price: What's This? $179.99

J&P Part: 380-879

Rating: Read Reviews

This item qualifies for free ground shipping


Instructions  380-879.pdf

Pro-One Wiring Harness Kit

• Great for custom builds

• Includes key switch, flasher and circuit breakers

• Easy to follow instructions included

• Complete except for handlebar wiring

Product Specs

  • Manufacturer Part Number: 400909
  • Sold in Units: Kit
  • Switch: Yes


Harley-Davidson® Models

  • Softail Bad Boy FXSTSB : 1995–1997
  • Softail Custom FXSTC : 1986–1998
  • Softail Fat Boy FLSTF : 1990–1999
  • Softail Heritage Classic FLSTC : 1987–1999
  • Softail Heritage FLST : 1986–1990
  • Softail Heritage Springer FLSTS : 1997–1999
  • Softail Night Train FXSTB : 1999
  • Softail Nostalgia FLSTN : 1993–1996
  • Softail Springer FXSTS : 1988–1999
  • Softail Standard FXST : 1985–1990, 1999

Customer Reviews


Very easy to install. Some minor custom fab needed but very clean. This is my first wiring project and the easy to follow directions made install very smooth.


Great design in relocating everything w the switch, only received 2 pages of instruction but was easy to figure out with the ones provided stating what factory color wire to hook new wires to. This was on a 93 fatboy that has been customized several times and had a mutilated factory harness to say the least.


Havent wired it yet, but as long it works the set up is pretty nice.


Good kit just make sure you have three pages of intructions I only got two. The instructions can be looked at on the website if needed


Good kit however wiring diagram didn't come with a third page recieved it from J&P


The harness is very nice. The detailed step-by-step instructions are complete junk. They don't match Harley colors and are near useless.


Wire harness is a great design, and relocates the starter relay and all circuit breakers from behind the oil tank to under the dash on a Heritage making for easy access. The only problem is not all wires on the harness have the same colors as original, so it takes a little to figure out where some wires go. Overall, I would recommend this product for anybody doing a complete wiring harness upgrade.