Who knows about proportional valves?

Ok thanks tooljunkie that's kind of how I thought it worked so I will hook it up that way, the bulb in my dash is grounded to the body through the metal dash board I'll just swap out the bulb pigtail for a two wire and hook to the ground to the switch. BTW, gravity did not bleed the r/r after sitting all night so I'll just finish up the old fashioned way! Thanks again to all who helped here lots of good ideas as usual!