diff --git a/lib/load-config.js b/lib/load-config.js
new file mode 100644
index 0000000..19674f3
--- /dev/null
+++ b/lib/load-config.js
@@ -0,0 +1,8 @@
+var loadConfig = require('load-config-file');
+
+// loadConfig.register('.json', JSON.parse);
+loadConfig.register(['.json', '.js'], function(ctx, opt, file){
+  return require(file);
+});
+
+module.exports = loadConfig;
diff --git a/lib/plugin-base.js b/lib/plugin-base.js
index d4d4af0..595b369 100644
--- a/lib/plugin-base.js
+++ b/lib/plugin-base.js
@@ -12,6 +12,7 @@ var assert = require('assert');
 var _ = require('lodash');
 var util = require('./utils');
 var g = require('./globalize');
+var loadConfig = require('./load-config');
 
 module.exports = PluginBase;
 
@@ -92,17 +93,23 @@ PluginBase.prototype.loadNamed = function(rootDir, env, name) {
  * @returns {Array.<String>} Array of absolute file paths.
  */
 PluginBase.prototype.findConfigFiles = function(rootDir, env, name, exts) {
-  var master = ifExists(name + '.json');
-  if (!master && (ifExistsWithAnyExt(name + '.local') ||
-    ifExistsWithAnyExt(name + '.' + env))) {
+  var master;
+  var vExts  = Object.keys(loadConfig.prototype.configurators);
+  for (var ext of vExts) {
+    master = ifExists(name + ext);
+    if (master) break;
+  }
+
+  if (!master && (ifExistsWithAnyExt(name + '.local', vExts) ||
+    ifExistsWithAnyExt(name + '.' + env, vExts))) {
     g.warn('WARNING: Main config file "%s{{.json}}" is missing', name);
   }
   if (!master) return [];
 
   var candidates = [
     master,
-    ifExistsWithAnyExt(name + '.local'),
-    ifExistsWithAnyExt(name + '.' + env),
+    ifExistsWithAnyExt(name + '.local', vExts),
+    ifExistsWithAnyExt(name + '.' + env, vExts),
   ];
 
   return candidates.filter(function(c) {
@@ -114,11 +121,11 @@ PluginBase.prototype.findConfigFiles = function(rootDir, env, name, exts) {
     return util.fileExistsSync(filePath) ? filePath : undefined;
   }
 
-  function ifExistsWithAnyExt(fileName) {
-    var extensions = exts || ['js', 'json'];
+  function ifExistsWithAnyExt(fileName, extensions) {
+    extensions = extensions || ['.js', '.json'];
     var file;
     for (var i = 0, n = extensions.length; i < n; i++) {
-      file = ifExists(fileName + '.' + extensions[i]);
+      file = ifExists(fileName + extensions[i]);
       if (file) {
         return file;
       }
@@ -134,7 +141,7 @@ PluginBase.prototype.findConfigFiles = function(rootDir, env, name, exts) {
  */
 PluginBase.prototype._loadConfigFiles = function(files) {
   return files.map(function(f) {
-    var config = require(f);
+    var config = loadConfig(f);
     config = _.cloneDeep(config);
     Object.defineProperty(config, '_filename', {
       enumerable: false,
diff --git a/lib/plugins/model.js b/lib/plugins/model.js
index 27f81f1..cb6dca1 100644
--- a/lib/plugins/model.js
+++ b/lib/plugins/model.js
@@ -13,7 +13,7 @@ var debug = require('debug')('loopback:boot:model');
 var _ = require('lodash');
 var toposort = require('toposort');
 var utils = require('../utils');
-var loadConfig = require('load-config-file');
+var loadConfig = require('../load-config');
 
 var tryReadDir = utils.tryReadDir;
 var assertIsValidConfig = utils.assertIsValidConfig;
@@ -21,8 +21,6 @@ var tryResolveAppPath = utils.tryResolveAppPath;
 var fixFileExtension = utils.fixFileExtension;
 var g = require('../globalize');
 
-loadConfig.register('.json', JSON.parse);
-
 module.exports = function(options) {
   return new Model(options);
 };