could be like the 89-91.5 i think and only have a little black box called the "Air/heater controller" mounted under the steering post on the fire wall. or well thats where mine sits. i got rid of that whole PCM in the 92 when i put the 90's engine in it. i just used the 90's harness. so if anyone needs a PCM for a 1992 W250 5 speed let me know lol its just sitting under the fender taking up space. i dont know if its good or not. the 92 didnt have an engine when i bought it. i was thinking of using it for shotgun target practice but i decided that wouldnt be good since parts are kinda hard to come by for these trucks
actually the computer on them doesnt control anything. I have a 97, 95, 94 and a 92 all running without a computer at all. The computer on the 1st gen trucks make the dash work and that is it. It just reads information from the engine. It wont defuel it or anything else, just turn a light on or move a guage needle on the dash.
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