diff --git a/asm/MetroidPrime/Tweaks/CTweakAutoMapper.s b/asm/MetroidPrime/Tweaks/CTweakAutoMapper.s
index ab6b53c8..352e3e85 100644
--- a/asm/MetroidPrime/Tweaks/CTweakAutoMapper.s
+++ b/asm/MetroidPrime/Tweaks/CTweakAutoMapper.s
@@ -3,8 +3,8 @@
 .section .data
 .balign 8
 
-.global lbl_803DF438
-lbl_803DF438:
+.global __vt__16CTweakAutoMapper
+__vt__16CTweakAutoMapper:
 	# ROM: 0x3DC438
 	.4byte 0
 	.4byte 0
@@ -46,11 +46,11 @@ __ct__16CTweakAutoMapperFR12CInputStream:
 /* 800B69D8 000B3938  93 A1 00 14 */	stw r29, 0x14(r1)
 /* 800B69DC 000B393C  93 81 00 10 */	stw r28, 0x10(r1)
 /* 800B69E0 000B3940  3C C0 80 3E */	lis r6, __vt__12ITweakObject@ha
-/* 800B69E4 000B3944  3C A0 80 3E */	lis r5, lbl_803DF438@ha
+/* 800B69E4 000B3944  3C A0 80 3E */	lis r5, __vt__16CTweakAutoMapper@ha
 /* 800B69E8 000B3948  7C 7F 1B 78 */	mr r31, r3
 /* 800B69EC 000B394C  7C 9C 23 78 */	mr r28, r4
 /* 800B69F0 000B3950  38 66 9C C4 */	addi r3, r6, __vt__12ITweakObject@l
-/* 800B69F4 000B3954  38 05 F4 38 */	addi r0, r5, lbl_803DF438@l
+/* 800B69F4 000B3954  38 05 F4 38 */	addi r0, r5, __vt__16CTweakAutoMapper@l
 /* 800B69F8 000B3958  90 7F 00 00 */	stw r3, 0(r31)
 /* 800B69FC 000B395C  7F 83 E3 78 */	mr r3, r28
 /* 800B6A00 000B3960  90 1F 00 00 */	stw r0, 0(r31)
@@ -314,9 +314,9 @@ __dt__16CTweakAutoMapperFv:
 /* 800B6DF0 000B3D50  93 E1 00 0C */	stw r31, 0xc(r1)
 /* 800B6DF4 000B3D54  7C 7F 1B 79 */	or. r31, r3, r3
 /* 800B6DF8 000B3D58  41 82 00 90 */	beq lbl_800B6E88
-/* 800B6DFC 000B3D5C  3C 60 80 3E */	lis r3, lbl_803DF438@ha
+/* 800B6DFC 000B3D5C  3C 60 80 3E */	lis r3, __vt__16CTweakAutoMapper@ha
 /* 800B6E00 000B3D60  34 1F 01 00 */	addic. r0, r31, 0x100
-/* 800B6E04 000B3D64  38 03 F4 38 */	addi r0, r3, lbl_803DF438@l
+/* 800B6E04 000B3D64  38 03 F4 38 */	addi r0, r3, __vt__16CTweakAutoMapper@l
 /* 800B6E08 000B3D68  90 1F 00 00 */	stw r0, 0(r31)
 /* 800B6E0C 000B3D6C  41 82 00 58 */	beq lbl_800B6E64
 /* 800B6E10 000B3D70  80 DF 01 00 */	lwz r6, 0x100(r31)
diff --git a/configure.py b/configure.py
index a7259375..92b6059b 100755
--- a/configure.py
+++ b/configure.py
@@ -112,7 +112,7 @@ LIBS = [
             "MetroidPrime/ScriptObjects/CScriptCameraWaypoint",
             ["MetroidPrime/CGameLight", True],
             "MetroidPrime/Tweaks/CTweakTargeting",
-            "MetroidPrime/Tweaks/CTweakAutoMapper",
+            ["MetroidPrime/Tweaks/CTweakAutoMapper", True],
             ["MetroidPrime/CParticleGenInfoGeneric", True],
             ["MetroidPrime/CParticleGenInfo", True],
             "MetroidPrime/CParticleDatabase",
diff --git a/include/Kyoto/Graphics/CColor.hpp b/include/Kyoto/Graphics/CColor.hpp
index 442f9ebf..30c92572 100644
--- a/include/Kyoto/Graphics/CColor.hpp
+++ b/include/Kyoto/Graphics/CColor.hpp
@@ -35,6 +35,10 @@ public:
   }
   void Get(float& r, float& g, float& b, float& a) const;
   void Get(float& r, float& g, float& b) const;
+  void SetAlpha(float a) {
+    mA = CCast::ToUint8(a * 255.f);
+  }
+
   static CColor Lerp(const CColor& a, const CColor& b, float t);
   static uint Lerp(uint a, uint b, float t);
   static CColor Modulate(const CColor& a, const CColor& b);
diff --git a/include/Kyoto/Streams/CInputStream.hpp b/include/Kyoto/Streams/CInputStream.hpp
index 6f1946b8..697b6804 100644
--- a/include/Kyoto/Streams/CInputStream.hpp
+++ b/include/Kyoto/Streams/CInputStream.hpp
@@ -107,4 +107,15 @@ inline rstl::vector< T, Alloc >::vector(CInputStream& in, const Alloc& allocator
   }
 }
 
+#include "rstl/reserved_vector.hpp"
+template < typename T, int N >
+inline rstl::reserved_vector< T, N >::reserved_vector(CInputStream& in)
+: x0_count(in.ReadInt32()) {
+  for (int i = 0; i < x0_count; i++) {
+    construct(&data()[i], in.Get(TType< T >()));
+  }
+}
+
+
+
 #endif // _CINPUTSTREAM
diff --git a/include/MetroidPrime/Tweaks/CTweakAutoMapper.hpp b/include/MetroidPrime/Tweaks/CTweakAutoMapper.hpp
new file mode 100644
index 00000000..e71e0ce7
--- /dev/null
+++ b/include/MetroidPrime/Tweaks/CTweakAutoMapper.hpp
@@ -0,0 +1,92 @@
+#ifndef _CTWEAKAUTOMAPPER
+#define _CTWEAKAUTOMAPPER
+
+#include "MetroidPrime/Tweaks/ITweakObject.hpp"
+
+#include "Kyoto/Graphics/CColor.hpp"
+#include "Kyoto/TOneStatic.hpp"
+
+#include "rstl/reserved_vector.hpp"
+
+class CInputStream;
+class CTweakAutoMapper;
+class CTweakAutoMapper : public ITweakObject, public TOneStatic< CTweakAutoMapper > {
+public:
+  ~CTweakAutoMapper();
+  CTweakAutoMapper(CInputStream&);
+
+private:
+  bool x4_24_showOneMiniMapArea : 1;
+  bool x4_25_ : 1;
+  bool x4_26_scaleMoveSpeedWithCamDist : 1;
+  float x8_camDist;
+  float xc_minCamDist;
+  float x10_maxCamDist;
+  float x14_minCamRotateX;
+  float x18_maxCamRotateX;
+  float x1c_camAngle;
+  float x20_;
+  CColor x24_automapperWidgetColor;
+  float x28_miniCamDist;
+  float x2c_miniCamXAngle;
+  float x30_miniCamAngle;
+  float x34_;
+  CColor x38_automapperWidgetMiniColor;
+  CColor x3c_surfColorVisited;
+  CColor x40_outlineColorVisited;
+  CColor x44_surfColorUnvisited;
+  CColor x48_outlineColorUnvisited;
+  CColor x4c_surfaceSelectColorVisited;
+  CColor x50_outlineSelectColorVisited;
+  float x54_mapSurfaceNormColorLinear;
+  float x58_mapSurfaceNormColorConstant;
+  float x5c_;
+  float x60_;
+  float x64_openMapScreenTime;
+  float x68_closeMapScreenTime;
+  float x6c_hintPanTime;
+  float x70_zoomUnitsPerFrame;
+  float x74_rotateDegPerFrame;
+  float x78_baseMapScreenCameraMoveSpeed;
+  CColor x7c_surfaceSelectColorUnvisited;
+  CColor x80_outlineSelectColorUnvisited;
+  float x84_miniAlphaSurfaceVisited;
+  float x88_alphaSurfaceVisited;
+  float x8c_miniAlphaOutlineVisited;
+  float x90_alphaOutlineVisited;
+  float x94_miniAlphaSurfaceUnvisited;
+  float x98_alphaSurfaceUnvisited;
+  float x9c_miniAlphaOutlineUnvisited;
+  float xa0_alphaOutlineUnvisited;
+  float xa4_doorCenterA;
+  float xa8_doorCenterB;
+  float xac_doorCenterC;
+  float xb0_;
+  float xb4_;
+  float xb8_miniMapViewportWidth;
+  float xbc_miniMapViewportHeight;
+  float xc0_miniMapCamDistScale;
+  float xc4_mapPlaneScaleX;
+  float xc8_mapPlaneScaleZ;
+  bool xcc_;
+  float xd0_universeCamDist;
+  float xd4_minUniverseCamDist;
+  float xd8_maxUniverseCamDist;
+  float xdc_switchToFromUniverseTime;
+  float xe0_camPanUnitsPerFrame;
+  float xe4_automapperScaleX;
+  float xe8_automapperScaleZ;
+  float xec_camVerticalOffset;
+  CColor xf0_miniMapSamusModColor;
+  CColor xf4_areaFlashPulseColor;
+  CColor xf8_;
+  CColor xfc_;
+  rstl::reserved_vector< CColor, 5 > x100_doorColors;
+  CColor x118_doorBorderColor;
+  CColor x11c_openDoorColor;
+};
+CHECK_SIZEOF(CTweakAutoMapper, 0x120)
+
+extern CTweakAutoMapper* gpTweakAutoMapper;
+
+#endif // _CTWEAKAUTOMAPPER
diff --git a/include/rstl/reserved_vector.hpp b/include/rstl/reserved_vector.hpp
index 736098df..cb921355 100644
--- a/include/rstl/reserved_vector.hpp
+++ b/include/rstl/reserved_vector.hpp
@@ -6,6 +6,8 @@
 #include "rstl/construct.hpp"
 #include "rstl/pointer_iterator.hpp"
 
+class CInputStream;
+
 namespace rstl {
 template < typename T, int N >
 class reserved_vector {
@@ -24,10 +26,12 @@ public:
   inline const_iterator end() const { return const_iterator(data() + x0_count); }
 
   reserved_vector() : x0_count(0) {}
-  reserved_vector(const T& value) : x0_count(N) { uninitialized_fill_n(data(), N, value); }
+  explicit reserved_vector(const T& value) : x0_count(N) { uninitialized_fill_n(data(), N, value); }
   reserved_vector(const reserved_vector& other) : x0_count(other.x0_count) {
     uninitialized_copy_n(other.data(), x0_count, data());
   }
+  reserved_vector(CInputStream& in);
+
   reserved_vector& operator=(const reserved_vector& other) {
     if (this != &other) {
       clear();
diff --git a/obj_files.mk b/obj_files.mk
index ac0c14a5..624b81e2 100644
--- a/obj_files.mk
+++ b/obj_files.mk
@@ -79,7 +79,7 @@ METROIDPRIME :=\
 	$(BUILD_DIR)/asm/MetroidPrime/ScriptObjects/CScriptCameraWaypoint.o\
 	$(BUILD_DIR)/src/MetroidPrime/CGameLight.o\
 	$(BUILD_DIR)/asm/MetroidPrime/Tweaks/CTweakTargeting.o\
-	$(BUILD_DIR)/asm/MetroidPrime/Tweaks/CTweakAutoMapper.o\
+	$(BUILD_DIR)/src/MetroidPrime/Tweaks/CTweakAutoMapper.o\
 	$(BUILD_DIR)/src/MetroidPrime/CParticleGenInfoGeneric.o\
 	$(BUILD_DIR)/src/MetroidPrime/CParticleGenInfo.o\
 	$(BUILD_DIR)/asm/MetroidPrime/CParticleDatabase.o\
diff --git a/src/MetroidPrime/Tweaks/CTweakAutoMapper.cpp b/src/MetroidPrime/Tweaks/CTweakAutoMapper.cpp
new file mode 100644
index 00000000..d6424d7a
--- /dev/null
+++ b/src/MetroidPrime/Tweaks/CTweakAutoMapper.cpp
@@ -0,0 +1,85 @@
+#include "MetroidPrime/Tweaks/CTweakAutoMapper.hpp"
+
+#include "Kyoto/Streams/CInputStream.hpp"
+
+// Used by CGameArea, CMapArea and CMapWorld.
+// TODO: properly handle this
+extern "C" int lbl_805A8EB0 = 0;
+
+CTweakAutoMapper::~CTweakAutoMapper() {}
+
+CTweakAutoMapper::CTweakAutoMapper(CInputStream& in)
+  : x4_24_showOneMiniMapArea(in.ReadBool())
+  , x4_25_(in.ReadBool())
+  , x4_26_scaleMoveSpeedWithCamDist(in.ReadBool())
+  , x8_camDist(in.ReadFloat())
+  , xc_minCamDist(in.ReadFloat())
+  , x10_maxCamDist(in.ReadFloat())
+  , x14_minCamRotateX(in.ReadFloat())
+  , x18_maxCamRotateX(in.ReadFloat())
+  , x1c_camAngle(in.ReadFloat())
+  , x20_(in.ReadFloat())
+  , x24_automapperWidgetColor(in)
+  , x28_miniCamDist(in.ReadFloat())
+  , x2c_miniCamXAngle(in.ReadFloat())
+  , x30_miniCamAngle(in.ReadFloat())
+  , x34_(in.ReadFloat())
+  , x38_automapperWidgetMiniColor(in)
+  , x3c_surfColorVisited(in)
+  , x40_outlineColorVisited(in)
+  , x44_surfColorUnvisited(in)
+  , x48_outlineColorUnvisited(in)
+  , x4c_surfaceSelectColorVisited(in)
+  , x50_outlineSelectColorVisited(in)
+  , x54_mapSurfaceNormColorLinear(in.ReadFloat())
+  , x58_mapSurfaceNormColorConstant(in.ReadFloat())
+  , x5c_(in.ReadFloat())
+  , x60_(0.4f)
+  , x64_openMapScreenTime(in.ReadFloat())
+  , x68_closeMapScreenTime(in.ReadFloat())
+  , x6c_hintPanTime(in.ReadFloat())
+  , x70_zoomUnitsPerFrame(in.ReadFloat())
+  , x74_rotateDegPerFrame(in.ReadFloat())
+  , x78_baseMapScreenCameraMoveSpeed(in.ReadFloat())
+  , x7c_surfaceSelectColorUnvisited(in)
+  , x80_outlineSelectColorUnvisited(in)
+  , x84_miniAlphaSurfaceVisited(in.ReadFloat())
+  , x88_alphaSurfaceVisited(in.ReadFloat())
+  , x8c_miniAlphaOutlineVisited(in.ReadFloat())
+  , x90_alphaOutlineVisited(in.ReadFloat())
+  , x94_miniAlphaSurfaceUnvisited(in.ReadFloat())
+  , x98_alphaSurfaceUnvisited(in.ReadFloat())
+  , x9c_miniAlphaOutlineUnvisited(in.ReadFloat())
+  , xa0_alphaOutlineUnvisited(in.ReadFloat())
+  , xa4_doorCenterA(in.ReadFloat())
+  , xa8_doorCenterB(in.ReadFloat())
+  , xac_doorCenterC(in.ReadFloat())
+  , xb0_(in.ReadFloat())
+  , xb4_(in.ReadFloat())
+  , xb8_miniMapViewportWidth(in.ReadFloat())
+  , xbc_miniMapViewportHeight(in.ReadFloat())
+  , xc0_miniMapCamDistScale(in.ReadFloat())
+  , xc4_mapPlaneScaleX(in.ReadFloat())
+  , xc8_mapPlaneScaleZ(in.ReadFloat())
+  , xcc_(in.ReadBool())
+  , xd0_universeCamDist(in.ReadFloat())
+  , xd4_minUniverseCamDist(in.ReadFloat())
+  , xd8_maxUniverseCamDist(in.ReadFloat())
+  , xdc_switchToFromUniverseTime(in.ReadFloat())
+  , xe0_camPanUnitsPerFrame(in.ReadFloat())
+  , xe4_automapperScaleX(in.ReadFloat())
+  , xe8_automapperScaleZ(in.ReadFloat())
+  , xec_camVerticalOffset(in.ReadFloat())
+  , xf0_miniMapSamusModColor(in)
+  , xf4_areaFlashPulseColor(in)
+  , xf8_(in)
+  , xfc_(in)
+  , x100_doorColors(in)
+  , x118_doorBorderColor(in)
+  , x11c_openDoorColor(in)
+{
+  x3c_surfColorVisited.SetAlpha(1.0f);
+  x40_outlineColorVisited.SetAlpha(1.0f);
+  x44_surfColorUnvisited.SetAlpha(1.0f);
+  x48_outlineColorUnvisited.SetAlpha(1.0f);
+}