TracMax by ThunderMax is an easy to install ABS wheel size correction module that is designed to help you regain full ABS functionality on 2014 to present Touring and 2015 to present Softail models that have been equipped with an aftermarket big front wheel kit. TracMax comes 100% assembled, ready to install with no wire cutting or splicing required and installs in under 15 minutes. Simply plug the TracMax into the factory ABS wiring harness and it seamlessly corrects the wheel speed signal of the front wheel based on wheel diameter. TracMax modules fit straight onto Electra Glide, Road Glide, Street Glide and Ultra models. Road King and Softail models require an adapter cable. The TracMax gets its power from the OEM Accessory Power Port. When this is already in use you need to order the optional Y-Power Adapter harness.