New to us deere 1780. Got it out today and found the markers won't function. No power to any solenoid on the marker valve blocks. Power to the mercury switches on the markers. Verified continuity through the main frame mercury switch and 5 volts to that switch. Is that switch a 5 volt reference or 12? All other functions work as they should. Thanks for any help.
1780 16/31 Markers
