Mr_Roboto
Full Access Member
Someone was trying to do this here, I couldn't find the original thread. The diagram here specs the wires to apply ground to force particular gears.
http://www.atraonline.com/manuals/general/tetdv/tetdv-c4k.htm
http://www.atraonline.com/manuals/general/tetdv/tetdv-c4k.htm