| 摘要 |
A system is provided for controlling the positions of a vehicle snow plow hydraulic lift control cylinder for raising the plow upon activation of a first solenoid by a first control signal, and at least one hydraulic pivot cylinder for pivoting said plow with respect to the vehicle upon activation of a second solenoid by a second control signal, where the vehicl e has an electrical network. The system comprises a manual switching unit including a first swit ch for creating a first digital command signal, a second switch for creating a second digital comman d signal, a coding circuit for creating a first communication signal upon receipt of the first digital command signal and a second communication signal upon receipt of the second digital command signal, a connector adapted to be manually received in an existing receptacle chamber in the vehicle, wherein the receptacle chamber has at least one connector terminal connected to the electrical network, and the connector includes an electrical element adapted to be electrically connecte d to the terminal for applying said communication signals to the electrical network, and a solenoi d operating unit fixed on the vehicle with an input connected to the network, outputs connected to each of the solenoids, and a receiver circuit for creating the first command signal upon receipt of the first communication signal and the second command signal upon receipt of the second communicatio n signal and applying the command signals to the outputs.
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