CAT Industrial to Standard J1939 Adapter Some J1708 vehicles use the

Some J1708 vehicles use the older style GM ALDL connector

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The most common application is to connect a GPS Tracker that is meant for an OBD2 vehicle to a vehicle that has the 9-pin round Deutsch connector

502 MAG MPI BRAVO (GEN VI) GM 502 V-8 & 8

CAT Industrial to Standard J1939 Adapter Some J1708 vehicles use theThis adapter allows a standard J1939 interface to connect to a CAT industrial Diagnostic Connector. Notice the center pin (A) On the standard J1939 connector, this is keyed with a small tab. On the CAT connector, there is no center pin keying.