On the passenger side engine compartment closest to the cab there is a connector that looks like something should be plugged into it, but I don't see anything that would. Does anyone know what this goes to or controls? Thanks!

 

that's the old OBD1 scan tool connection or so it looks like.. but usually on drivers side.....


actually it is the OBD1 port for scanner.... (service manual said anyway)

 

Interesting. Thanks for the info.

 

Yep, OBD1 scanner port.

 

OBD 1 (Mine is in the exact same location ~ '92 3.9 Auto Club Cab 4x4)

~ Red