Nice find. That little code saved you some serious time with a w.d. and a DVOM.

 

For sure, it at least gave us a (very) coarse idea of what wires we needed to be trying to trace which was more help than just looking at the wiring harnesses and scratching our heads. Just out of curiosity though, what is a w.d. and DVOM? I'm guessing w.d. is wiring diagram and DVOM is some sort of diagnostic wire tracing tool?

 

Wiring Diagram and Digital Volt/Ohm Meter.