diff --git a/init.lua b/init.lua
index 2b4db46..5b372a4 100644
--- a/init.lua
+++ b/init.lua
@@ -564,10 +564,10 @@ node.types = {
 	{"monitorwall",      "Wall monitors",       "monitorwall"},
 	{"screen3",      "Wall monitor",       "screen3"},
 	{"doomlight",      "Doom light",       "doomlight", 12},
-	{"bluwllight",      "Blue wall light", "capsule3", 20},
+	{"bluwllight",      "Blue wall light", "capsule3", default.LIGHT_MAX},
 	{"bluegrid",      "Blue Grid", "bluegrid", 5},
 	{"fan",      "Fan",       "fan"},
-	{"ppllght",      "Purple wall light", "", 50},
+	{"ppllght",      "Purple wall light", "", default.LIGHT_MAX},
 	{"pplwll",      "Purple wall", "", 0},
 	{"pplwll2",      "Purple wall2", "", 0},
 	{"pplwll3",      "Purple wall3", "", 0},
@@ -596,12 +596,12 @@ for _, row in ipairs(node.types) do
 end
 
 node.plants = {
-	{"flower1", "Glow Flower", 1,0, 50},
+	{"flower1", "Glow Flower", 1,0, default.LIGHT_MAX},
 	{"flower2", "Pink Flower", 1.5,0, 10},
 	{"flower3", "Triffid", 2,5, 0},
 	{"flower4", "Weeping flower", 1.5,0, 0},
 	{"plant1", "Bulb Plant", 1,0, 0},
-	{"plant2", "Trap Plant", 1.5,0, 30},
+	{"plant2", "Trap Plant", 1.5,0, default.LIGHT_MAX},
 	{"plant3", "Blue Jelly Plant", 1.2,0, 10},
 	{"plant4", "Green Jelly Plant", 1.2,0, 10},
 	{"plant5", "Fern Plant", 1.7,0, 0},
@@ -790,7 +790,7 @@ minetest.register_node("scifi_nodes:lightstp", {
 	tiles = {
 		"scifi_nodes_lightstripe.png"
 	},
-	light_source = 14,
+	light_source = default.LIGHT_MAX,
 	paramtype = "light",
 	groups = {cracky=1}
 })
diff --git a/models.lua b/models.lua
index 7865e35..1088f95 100644
--- a/models.lua
+++ b/models.lua
@@ -53,8 +53,8 @@ scifi_nodes.register_slope("holes", "Holes", {"scifi_nodes_holes.png",}, 0)
 scifi_nodes.register_slope("pipe", "Pipe", {"scifi_nodes_pipe.png",}, 0)
 scifi_nodes.register_slope("stripes", "Stripes", {"scifi_nodes_stripes.png",}, 0)
 scifi_nodes.register_slope("screen", "Screen", {"scifi_nodes_screen3.png",}, 5)
-scifi_nodes.register_slope("lightstripe", "Lightstripe", {"scifi_nodes_lightstripe.png",}, 20)
-scifi_nodes.register_slope("blight2", "Blue Light 2", {"scifi_nodes_capsule3.png",}, 20)
+scifi_nodes.register_slope("lightstripe", "Lightstripe", {"scifi_nodes_lightstripe.png",}, default.LIGH_MAX)
+scifi_nodes.register_slope("blight2", "Blue Light 2", {"scifi_nodes_capsule3.png",}, default.LIGH_MAX)
 scifi_nodes.register_slope("wallpipe", "Alien Pipe", {"scifi_nodes_wallpipe.png",}, 0)
 scifi_nodes.register_slope("alien", "Alien Wall", {"scifi_nodes_alnslp.png",}, 0)
 scifi_nodes.register_slope("purple", "Purple", {"scifi_nodes_purple.png",}, 0)
@@ -137,10 +137,10 @@ node.types = {
 --	{"monitorwall",      "Wall monitors",       "monitorwall"},
 	{"screen3",      "Wall monitor",       "screen3"},
 	{"doomlight",      "Doom light",       "doomlight", 12},
-	{"bluwllight",      "Blue wall light", "capsule3", 20},
+	{"bluwllight",      "Blue wall light", "capsule3", default.LIGH_MAX},
 	{"bluegrid",      "Blue Grid", "bluegrid", 5},
 	{"fan",      "Fan",       "fan"},
-	{"ppllght",      "Purple wall light", "", 50},
+	{"ppllght",      "Purple wall light", "", default.LIGH_MAX},
 	{"pplwll",      "Purple wall", "", 0},
 	{"pplwll2",      "Purple wall2", "", 0},
 	{"pplwll3",      "Purple wall3", "", 0},
diff --git a/nodeboxes.lua b/nodeboxes.lua
index 6a88d21..3a0e77d 100644
--- a/nodeboxes.lua
+++ b/nodeboxes.lua
@@ -301,7 +301,7 @@ minetest.register_node("scifi_nodes:gloshroom", {
 	},
 	drawtype = "nodebox",
 	paramtype = "light",
-	light_source = 50,
+	light_source = default.LIGHT_MAX,
 	walkable = false,
 	buildable_to = true,
 	sunlight_propagates = false,
@@ -444,7 +444,7 @@ minetest.register_node("scifi_nodes:lightbar", {
 	paramtype = "light",
 	paramtype2 = "wallmounted",
 	sunlight_propagates = true,
-	light_source = 25,
+	light_source = default.LIGHT_MAX,
 	node_box = {
 		type = "fixed",
 		fixed = {
@@ -522,7 +522,7 @@ minetest.register_node("scifi_nodes:light_dynamic", {
 		fixed = {-0.5, -0.5, -0.5, -0.45, 0.5, 0.5}
 	},
 	paramtype2 = "wallmounted",
-	light_source = 25,
+	light_source = default.LIGHT_MAX,
 	groups = {cracky=1, oddly_breakable_by_hand=1},
 	sounds = default.node_sound_glass_defaults()
 })
@@ -569,7 +569,7 @@ minetest.register_node("scifi_nodes:lightbars", {
 	drawtype = "nodebox",
 	paramtype = "light",
 	use_texture_alpha = true,
-	light_source = 25,
+	light_source = default.LIGHT_MAX,
 	node_box = {
 		type = "fixed",
 		fixed = {
@@ -590,7 +590,7 @@ tiles = {{
 		animation = {type = "vertical_frames", aspect_w = 16, aspect_h = 16, length = 1.00},
 	}},
 	use_texture_alpha = true,
-	light_source = 15,
+	light_source = default.LIGHT_MAX,
 	drawtype = "nodebox",
 	sunlight_propagates = true,
 	paramtype = "light",
@@ -610,7 +610,7 @@ tiles = {
 		"scifi_nodes_orange.png",
 	},
 	use_texture_alpha = true,
-	light_source = 20,
+	light_source = default.LIGHT_MAX,
 	drawtype = "nodebox",
 	sunlight_propagates = true,
 	paramtype = "light",
@@ -1148,7 +1148,7 @@ minetest.register_node("scifi_nodes:glassscreen", {
 	drawtype = "nodebox",
 	paramtype = "light",
 	paramtype2 = "facedir",
-	light_source = 15,
+	light_source = default.LIGHT_MAX,
 	sunlight_propagates = true,
 	node_box = {
 		type = "fixed",