Magento 2 – How to Change Position of Sign In and My Account Link

The position is hardcoded in /app/code/core/Mage/Checkout/Block/Links.php:

$parentBlock->addLink($text, 'checkout/cart', $text, true, array(), 50, null, 'class="top-link-cart"');

The cart is pos 50 and the checkout link is pos 60. So maybe the easiest way is to position all top.links below 50. But to place just the cart link at the end you would have to rewrite the addCartLink() method.

Use the following code to show your account link in header:

<?php
    $objectManagerlogin = \Magento\Framework\App\ObjectManager::getInstance();
    $customerSession = $objectManagerlogin->get('Magento\Customer\Model\Session');
    $baseurl = $objectManagerlogin->get('Magento\Store\Model\StoreManagerInterface')->getStore(0)->getBaseUrl();
?>
    <?php if($customerSession->isLoggedIn()) { ?>
   <a href="<?php echo $baseurl .'customer/account/logout'; ?>">LOGOUT</a>
    <?php }else { ?>
        <a href="<?php echo $baseurl .'customer/account/login'; ?>">LOGIN</a>       
        <?php
    }
    ?>