Did a quick edit and made myself some new cockpit lights for the PMDG B738 for P3D4. Much better than than the pixelated night lights with the default. Still need to figure out how to edit spotlights without having to unpause p3d4 before I can see the changes but I'll get there.
Just copy the FSLSpotlights.ini file into your PMDG B738 aircraft folder ... and don't know if it is suppose to be this way but on my rig it only works with HDR enabled.
FSLSpotLights.ini