If you’re working on a 1999 Harley-Davidson FXDX, having the right wiring diagram can be a game changer. We’ve seen plenty of folks run into electrical headaches, especially after installing aftermarket radios or other electronics. Main harness issues are no joke, and a fried wiring system can quickly turn into a major project.
We get dozens of calls about this so, we’re sharing this FXDX wiring diagram so you can tackle those tricky connections if you are addressing electrical issues yourself. Whether you’re troubleshooting or upgrading, having this guide handy might save you from unnecessary frustration.
If you get stuck or need advice, feel free to reach out. We’ve been in the shop long enough to know these bikes inside and out, and we’re happy to point you in the right direction.
