The custom 2-wire kit has very special installation splicing instructions. You can download the PDF instructions and bike layout information here (click the links to download PDF files):
Bike Speed Sensor Layout
Each unit is extensively tested, and comes with a 30-day money back guarantee if for any reason it fails to meet your expectation (All parts must be returned in original condition), a TWO YEAR unlimited replacement guarantee, and a limited lifetime warranty. The product may not be damaged or subjected to over-voltage.
SH-V4-2W: Yamaha XT250 (2005-2019), YBR250 (2007-2012)
This is a SPECIAL ORDER ITEM. Requires 3-4 week lead time for delivery.