Did you even want to test your O2 sensors to see if they are working correctly?
Have you ever considered installing an air fuel gauge on your bike to monitor the AFR in real time?
In the past your only choice of doing this was to cut the wiring harness or purchase a set of expensive 'piercing' voltage probes from a tool supply.
With the Nightrider O2 Sensor Diagnostic Taps for the Harley-Davidson two wire 18mm Bosch O2 Sensors or 4-wire 12mm Delphi O2 sensors, you can simply plug-n-play this OEM harness adapter for shop diagnostics or install an AFR gauge.
Includes OEM style HD O2 Connector, OEM H-D Harness Connector with 1/4" spade adapter for signal tap, making connection to diagnostic equipment or permanent AFR guages easy. (Sold as Pairs)