This break-out box is a simple to use tool to measure input and output signals from the Electronic Control Module (ECM) and all related sensors and modules of the Electronic Fuel Injection (EFI) model bikes. And this can even be done on a running motorcycle. The break-out box is connected with the separately available T-connector, which is connected in between the ECM and the main connector. Now you have easy access with the probes from your Multi Meter or scope to all connections, allowing to measure input and output signals as well as checking the wiring integrity. The Break-out box comes complete with a practical casing that can also hold extra T-Connectors. The T-connectors are available for Delphi and Magneti Marelli injection systems, Turn Signal Modules (TSM), Turn Signal Security Modules (TSSM) and Hands Free Security Modules (HFSM),as well as for the Fuel Injection and Body Control Module (BCM) on the latest models with Harley-LAN, also known as CAN-Bus systems. T-connectors come with easy to read pin-layout charts. A kit with 73 common connectors for non-destructive diagnostic operations anywhere else in the wiring harness is also available.