Thanks, will try backing off adjustment first, Evidently this truck did not come with a lever switch. I have not found any wiring or signs of where one was mounted. The original wires ran back to a pressure switch, out before the hydrovac.
57 GMC LCF 370 55 John Deere 40-W 59 John Deere 430-W 2000 GMC 4x4 56 John Deere 420-W Pix on Photobucket