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I'm positive you can't do that with the factory lights unless you know how to modify circuit boards. I bought my tri-bar light on eBay. There are a bunch of companies selling them. It has run, brake and turn signals. The run and brake circuits are included with the factory plug. The turn signals you have to splice into the factory wires, it wasn't hard. With the regular turn signals set up as run brake I now have 4 running lights, 4 brake lights and two signals per side. Also it has over 30 LED's compared to the five the factory light has. There are companies (probably made in the USA) that sell a unit like this for over $100. I took a chance on one of the many selling them from China for under $25. It has worked great for two years
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.
Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.
Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.
