Isuzu Repair: 1992 Isuzu Trooper LS, fuel pump relay, isuzu trooper

Question
Where do you hook up a diagnostic machine on this vehicle.

It had been stalling out stopped one day to get gas and hasn't started since.  have had several mechanics look at it. cant figure it out.  good oil presure ignition module ok.

Answer
Tell them to check the main ground wiring harness connection and also the fuel pump relay wiring harness that runs into the fuse box in the engine bay. You might find the culprit Debra. ALthough the OBDI system should be under the driver-side dashboard under the steering wheel and is a male connector I beleive. ALthough if I am wrong let me know and we will go from here okay??