I have an old fisher.. Share on Facebook; Open Question. I have an old fisher speedcast snow snow. I need wiring diagram for selonoid to pump. Posted by Anonymous on Jan 19, 2012. Want Answer 0. Clicking this will make more experts see the question and we will remind you when it gets answered. Fisher Speed cast problem | Snow Plowing Forum - PlowSite Jan 08, 20108' Fisher speed-cast, cable activated pump pulley system. Replaced pump before last storm because blade would drop when traveling with blade up. 3 different shops said it was the pump so I decided to change out rather then get stuck out in a storm. Installed the new pump 2 weeks ago and it still would drop when traveling but all operated fine. Related searches for fisher speedcast plow wiring diagram fisher plow electrical problemstroubleshooting fisher plow wiring harnessfisher snow plow parts diagramfisher minute mount wiring schematicfisher plow wiring diagram dodgeold fisher plow parts diagramfisher plow headlight wiring diagramfisher plow controller wiring diagram