Caterpillar SR321 Snow Blower Schematic

Hi guys. Does anyone happen to have the schematic for this snow blower? I built a harness for a customer and we cannot get it to work. The 8 pin connector does not seem to be pinned correctly, but upon final examination I cannot see how it ever worked on a Cat. There are only three switches in the Cat that pin out to the 14 pin connector C1, C2 and Aux 7. How are they able to run the up/down and left right controls on a blower?



Thanks for your help guys.

Caterpillar SR321 Snow Blower Schematic