Wiring Diagram Printer-Friendly PDF wiring diagram Video Instructions: Seth goes set by step through the simplest method to wiring an Evolution Big Twin chopper. He uses an  Ultima programmable ignition and Throttle Addiction's Evolution Big Twin Wiring Harness Kit to …

Printable Test Sheet Printable Charging System Diagnostic sheet [PDF] Video Instructions: Overview Are you experiencing charging issues with your motorcycle? Don't worry, we've got you covered. Hi, I'm Seth from Throttle Addiction, and in this video we discuss how to test your motorcycle's en …

We love seeing what our customers create! If you want to show off what you've got on our website, email 5 or more photos to ryan@throttleaddiction.com and answer the following questions:1. Owner Name2. Builder name (if different)3. Bike Location (City, State)4. Engine/ Model year5. Frame/ Which Thro …

In 1933, Harley-Davidson switched from Schebler carburetors to the Linkert M-series carburetor produced by L&L Manufacturing in Indianapolis, IN. For the next 32 years, Harley would use various Linkert carburetors on all their production motorcycles, from flatheads to Knuckleheads to Panheads. If …

Seth details how to install custom hand controls on a motorcycle. He preforms this customization on an Evolution Sportster chopper running Throttle Addiction's Deluxe Sportster Hardtail kit. The same principals apply for many different models of Harleys, in addition to other makes.Black Custom Hand …

Seth shows how to remove the fender mounts from Sportster fork lowers. He also removes the reflectors, rebuilds the forks and installs fork tube extension caps. This is the first half of our two part video series on cleaning up the front end of our Evolution Sportster chopper running Throttle Addict …