Actia 3 x 18 Pin Diag4Bike T-Adapter for ECM
18-22 Softail, 11 FLSTSE2, 12 FLSTSE3, 13-14 FXSBSE, 14-15 FLSTNSE, 16-17 FXSE, 16-17 FLSS, 16-17 FLSTFBS, 14-22 Touring, 14-22 Trike 

Parallel diagnostic equipment is designed for measuring input and output signals to and from the electronic control unit (ECU) which is typically used in modern vehicles to control engine functions. However, it can also be used for measurements on other control units installed in vehicles. Measurements can be carried out on a system that is in operation (i.e. a running engine).