diff --git a/Examples/UIExplorer/UIExplorerUnitTests/RCTConvert_NSURLTests.m b/Examples/UIExplorer/UIExplorerUnitTests/RCTConvert_NSURLTests.m
index a42d587b06..0de322a88a 100644
--- a/Examples/UIExplorer/UIExplorerUnitTests/RCTConvert_NSURLTests.m
+++ b/Examples/UIExplorer/UIExplorerUnitTests/RCTConvert_NSURLTests.m
@@ -36,7 +36,7 @@
 } \
 
 #define TEST_BUNDLE_PATH(name, _input, _expectedPath) \
-TEST_PATH(name, _input, [[[NSBundle mainBundle] bundlePath] stringByAppendingPathComponent:_expectedPath])
+TEST_PATH(name, _input, [[[NSBundle bundleForClass:[self class]] bundlePath] stringByAppendingPathComponent:_expectedPath])
 
 // Basic tests
 TEST_URL(basic, @"http://example.com", @"http://example.com")
diff --git a/Libraries/Image/RCTAssetBundleImageLoader.m b/Libraries/Image/RCTAssetBundleImageLoader.m
index fb9aaa0572..3ac517c41b 100644
--- a/Libraries/Image/RCTAssetBundleImageLoader.m
+++ b/Libraries/Image/RCTAssetBundleImageLoader.m
@@ -21,7 +21,7 @@ RCT_EXPORT_MODULE()
     return nil;
   }
 
-  NSString *resourcesPath = [NSBundle mainBundle].resourcePath;
+  NSString *resourcesPath = [NSBundle bundleForClass:[self class]].resourcePath;
   NSString *requestPath = requestURL.absoluteURL.path;
   if (requestPath.length < resourcesPath.length + 1) {
     return nil;
@@ -37,8 +37,9 @@ RCT_EXPORT_MODULE()
     return NO;
   }
 
-  if ([[NSBundle mainBundle] URLForResource:imageName withExtension:nil] ||
-      [[NSBundle mainBundle] URLForResource:imageName withExtension:@"png"]) {
+  NSBundle *bundle = [NSBundle bundleForClass:[self class]];
+  if ([bundle URLForResource:imageName withExtension:nil] ||
+      [bundle URLForResource:imageName withExtension:@"png"]) {
     return YES;
   }
 
diff --git a/Libraries/Image/RCTImageDownloader.m b/Libraries/Image/RCTImageDownloader.m
index c2aa89f73a..e299b13282 100644
--- a/Libraries/Image/RCTImageDownloader.m
+++ b/Libraries/Image/RCTImageDownloader.m
@@ -39,7 +39,8 @@ RCT_EXPORT_MODULE()
   // Have to exclude 'file://' from the main bundle, otherwise this would conflict with RCTAssetBundleImageLoader
   return
     [requestURL.scheme compare:@"http" options:NSCaseInsensitiveSearch range:NSMakeRange(0, 4)] == NSOrderedSame ||
-    ([requestURL.scheme caseInsensitiveCompare:@"file"] == NSOrderedSame && ![requestURL.path hasPrefix:[NSBundle mainBundle].resourcePath]) ||
+    ([requestURL.scheme caseInsensitiveCompare:@"file"] == NSOrderedSame &&
+     ![requestURL.path hasPrefix:[NSBundle bundleForClass:[self class]].resourcePath]) ||
     [requestURL.scheme caseInsensitiveCompare:@"data"] == NSOrderedSame;
 }
 
diff --git a/React/Base/RCTConvert.m b/React/Base/RCTConvert.m
index aa99b3e44e..79efea631f 100644
--- a/React/Base/RCTConvert.m
+++ b/React/Base/RCTConvert.m
@@ -101,7 +101,7 @@ RCT_CUSTOM_CONVERTER(NSData *, NSData, [json dataUsingEncoding:NSUTF8StringEncod
       path = path.stringByExpandingTildeInPath;
     } else if (!path.absolutePath) {
       // Assume it's a resource path
-      path = [[NSBundle mainBundle].resourcePath stringByAppendingPathComponent:path];
+      path = [[NSBundle bundleForClass:[self class]].resourcePath stringByAppendingPathComponent:path];
     }
     return [NSURL fileURLWithPath:path];
   }
@@ -426,28 +426,22 @@ RCT_CGSTRUCT_CONVERTER(CGAffineTransform, (@[
 
   NSURL *URL = [self NSURL:path];
   NSString *scheme = URL.scheme.lowercaseString;
-  if (path && [scheme isEqualToString:@"file"]) {
-    if (RCT_DEBUG || [NSThread currentThread] == [NSThread mainThread]) {
-      if ([URL.path hasPrefix:[NSBundle mainBundle].resourcePath]) {
-        // Image may reside inside a .car file, in which case we have no choice
-        // but to use +[UIImage imageNamed] - but this method isn't thread safe
-        static NSMutableDictionary *XCAssetMap = nil;
-        if (!XCAssetMap) {
-          XCAssetMap = [NSMutableDictionary new];
-        }
-        NSNumber *isAsset = XCAssetMap[path];
-        if (!isAsset || isAsset.boolValue) {
-          image = [UIImage imageNamed:path];
-          if (RCT_DEBUG && image) {
-            // If we succeeded in loading the image via imageNamed, and the
-            // method wasn't called on the main thread, that's a coding error
-            RCTAssertMainThread();
-          }
-        }
-        if (!isAsset) {
-          // Avoid calling `+imageNamed` again in future if it's not needed.
-          XCAssetMap[path] = @(image != nil);
-        }
+  if (URL && [scheme isEqualToString:@"file"]) {
+    RCTAssertMainThread();
+    if ([URL.path hasPrefix:[NSBundle bundleForClass:[self class]].resourcePath]) {
+      // Image may reside inside a .car file, in which case we have no choice
+      // but to use +[UIImage imageNamed] - but this method isn't thread safe
+      static NSMutableDictionary *XCAssetMap = nil;
+      if (!XCAssetMap) {
+        XCAssetMap = [NSMutableDictionary new];
+      }
+      NSNumber *isAsset = XCAssetMap[path];
+      if (!isAsset || isAsset.boolValue) {
+        image = [UIImage imageNamed:URL.path];
+      }
+      if (!isAsset) {
+        // Avoid calling `+imageNamed` again in future if it's not needed.
+        XCAssetMap[path] = @(image != nil);
       }
     }