WIRING DIAGRAM FOR A DOUBLE SOLENOID PIERCE WINCH - Fixya Oct 22, 2011Winches are out in the worst weather so before I looked at a wiring diagram I would be checking the condition of all the terminals for clean and tight. Next check the charge rate and condition of the battery driving the winch even having a load test done on that battery to see if all the cells are ok as when the solenoid clicks but no more the Pierce winch diagram - Fixya pierce winch diagram how can I get my winch to go out ? - Electric Electrical Supplies question. Search Fixya. Browse Categories Answer Questions . Electric Electrical Supply Pierce winch diagram. How can I get my winch to go out ? Posted by Anonymous on Mar 26, 2014.