9 Pin Deutsch Truck Y Adapter. Simply remove the existing Deutsch 9 pin connector from its mounting location and install the Y adapter mount to the existing mounting location. Plug the other 9 pin Female end of this adapter into the existing 9 Pin Male connector, and then the OBD2 Female end to a Tracking device or other OBD2 reporting or blue tooth accessory. Great for hiding tracking and mobile electronics, while leaving the access to the vehicles computer for downloading. Your add on device may need to be unplugged to read some service codes. NOTE: If your plug in is GREEN this adapter DOES NOT WORK. Please search our part number OBD2-9PG.