summit adjustable proportioning valve help

I have a 76 dart , I want to know how the summit pv hooks up in my brakes because it has one inlet and one outlet. Does anyone have any ideas. Thanks

You put it in line to your rear brakes.

I put mine between the master cylinder and the stock prop valve. It works fine, but the in-dash brake light came on. The problem is the reduced pressure tricks the stock prop valve into thinking the master cylinder is bad. So I disconnected the wire at the valve.

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