Im switching to manual brakes and adding a line lock. I would love to remove my old prop valve and switch to the smaller box with the **** on it. Then comes the line lock to add more confusion since it has to be added into the system AFTER the prop valve. Im sure someone here has a similar set-up and can clear this up for me. I'm not installing my LS 402 that is sitting on the stand ready, until I get my brake lines rerouted, cut, and reflared accordingly. Pics of any manual or power brakes using the stock prop valve and line lock might help too. TIA

 

The line lock can go before the prop valve as well as after. It can go on the front brakes as well as the rear depending on if you want it to release with the switch or the brake pedal.

Figure out where you want it, and get the fittings for your line lock that are compatible with the brake line diameter where you want it.

 

None of the pics in the install instructions show the line lock before the prop valve so there must be a reason for that.

 

The line lock shuts off the flow of fluid, so the pressure ends there, a prop valve has nothing to do with it.