CAT (Gray) Male Vehicle Connector, 9-position Choose the correct version above

Choose the correct version above for your version of the MEFI controller:

Many 1990 and newer vehicles do not need the 10k resistor to start data flowing

350 MAG BRAVO (GEN+) GM 350 V-8

or slip them into the wire holes on the back of the connector to monitor the signal while the injector is still connected

CAN-based Marine applications (MOBD) typically use a flat 6-pin diagnostic connector

CAT (Gray) Male Vehicle Connector, 9-position Choose the correct version aboveCAT Industrial uses a similar connector to the J1939 Connector. It is also a 9 pin Deutsch, but the center pin has no key tab. Also the socket shrouds are slightly larger. You can try to force a fit, but DO NOT. It has a very different pin assignment: Cavity Description A Battery B Ground C CAN Shield D CAT Data Link + E CAT Data Link F J1939 G J1939+ H J1708 J J1708+