silveradols

I just installed new calipers, new rotors and brake pads on the front of my Cherokee. I could get them bled, so I tried a few things. Since the brake reservoir was dry when I got it, I added some more fluid and bled the master cylinder first and then my calipers. Still no pedal, but then I noticed fluid leaking from the proportional valve. It leaking around the plastic plug that the proportional valve sensor plugs into and thru the top of the plastic plug. Where can I get a new proportional valve and a proportional valve sensor?