Line Lock problem

[ibsorgn]

So if you didn't have this problem before installing my GUESS... would be that the prop valve was damaged by the LL being installed incorrectly. There are o rings and springs in the prop vavle, here is the actual cutaway for a 70-76 mopar and a link that might help figure it out.
https://www.musclecarresearch.com/1970-76-mopar-combo-valve-autopsy

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Maybe I didn't make myself clear, after removing the LL my brakes work fine. So I can only assume that the prop valve was not damaged. Don't believe you can install the LL wrong as the input and outputs are clearly labeled. I appreciate the diagrams, starting to believe that the LL is defective.

 

[AMXRICK]

Maybe I didn't make myself clear, after removing the LL my brakes work fine. So I can only assume that the prop valve was not damaged. Don't believe you can install the LL wrong as the input and outputs are clearly labeled. I appreciate the diagrams, starting to believe that the LL is defective.

I have a installation question. I have a prop valve in rear line by axle. My Pressure valve is between R front and rear line. To use on both front R/L lines I need to put the LL at the Master cylinder output (before the front line L/R Tee). My question is that if I install the LL on the front brake before the pressure valve then the pressure switch (Gnd) will activate because the valve senses pressure between front and rear brake Lines. Then will pressure switch reset itself when LL in deactivated?

 

[AMXRICK]

I have a installation question. I have a prop valve in rear line by axle. My Pressure valve is between R front and rear line. To use on both front R/L lines I need to put the LL at the Master cylinder output (before the front line L/R Tee). My question is that if I install the LL on the front brake before the pressure valve then the pressure switch (Gnd) will activate because the valve senses pressure between front and rear brake Lines. Then will pressure switch reset itself when LL in deactivated? Here is a pic of my pressure sensing valve. R side is line between master cylinder

and rear brakes. L side is line between the Tee and the right brake. This is a pressure sense block only and top is switched ground to brake fail light.