wighair/appapi/config/fecshop_local_modules/V1.php

<?php
/**
 * FecShop file.
 *
 * @link http://www.fecshop.com/
 * @copyright Copyright (c) 2016 FecShop Software LLC
 * @license http://www.fecshop.com/license/
 */
return [
    'v1' => [
        'controllerMap' =>[
            'customer'=> 'appapi\local\local_modules\V1\controllers\CustomerController'
        ]
    ]
];