I've been plugging away at my wiring situation. Does anyone know of a wiring diagram for a '94 bighorn? I'd be happy to buy Isuzu shop manuals, but I haven't been able to find any for that model year.

Where I'm at is I've removed the portion of the harness that connects my two engine plugs, three transmission plugs and the PCM/TCM (tramsmission computer). Some of the wires go directly between the engine/tramsission an the PCM, those I don't have to worry about. My concern is primarily the PCM wires that don't go to the transmission/engine. I'm sure at least one is ground and another is 12v, but the other 8 or so are unknown to me. Some would go to the winter/power switch, others to indicator lights for those mode, I'm not sure which though. The other wires are completely unknown to me. The 'unknown' engine wires are a little less of a concern, oil press, temp, glow plugs, etc. Those shouldn't be too hard to figure out by tracing them to their source.

I have looked at wiring diagrams for other years that I've sourced, some wire colors appear to match up to what I need to connect, but others are different colors between what I have and what my wiring diagrams for other years indicate.

I'm still cataloging what I have and will post the colors when I have them all mapped out.

Thanks!
Paul