The 1997 Dodge Ram OBD 2 port is under driver side dash next above accelerator pedal
OBD 1
OBD 1
Lower driver side of the engine.
It wasn't built with one.
The OBD 2 connector is under the dash on the driver side.
The 1995 Dodge Ram 1500 uses an OBD 1. You can double check this bu looking at the emissions sticker under the hood.
The OBD 2 connector is under the dash on the driver side.
A 1998 Dodge Ram does not have EGR.
Inside the fuel tank
yes
There wasn't a 1998 Dodge Ram 1500 diesel.