Hydro-boost with Disk/Disk Prop Valve

[Orange Crate]

My disk/disk hydro-boost conversion proportioning valve turns the "brake" light on when applying the brake. This is a new first installation/test in the garage. I had selected a disk/disk proportioning valve when putting it together but it is obviously not the correct combo. So anyone with hydro-boost have a part number for a proportioning valve that works? I used the search function above with lots of info but non with a hydro-boost added in. The system has been bled numerous times and the light can easily be reset. I'm not looking for trouble shooting info unless you have hydro-boost.