<template name="configureLoginServiceDialogForGoogle">
  <p>
    First, you'll need to get a Google Client ID. Follow these steps:
  </p>
  <ol>
    <li>
      Visit <a href="https://code.google.com/apis/console/" target="blank">https://code.google.com/apis/console/</a>
    </li>
    <li>
      If necessary, "Create Project"
    <li>
      Open the "API Access" tab
    </li>
    <li>
      Create another Client ID
    </li>
    <li>
      Click "Edit settings&hellip;"
    </li>
    <li>
      Set Authorized Redirect URIs to: <span class="url">{{siteUrl}}_oauth/google?close</span>
    </li>
    <li>
      Set Authorized Javascript Origins to: <span class="url">{{siteUrl}}</span>
    </li>
    <li>
      Create client ID
    </li>
  </ol>
</template>

<template name="configureLoginServiceDialogForGoogle">
  <p>
    First, you'll need to get a Google Client ID. Follow these steps:
  </p>
  <ol>
    <li>
      Visit <a href="https://code.google.com/apis/console/" target="blank">https://code.google.com/apis/console/</a>
    </li>
    <li>
      If necessary, "Create Project"
    <li>
      Open the "API Access" tab on the left
    </li>
    <li>
      Create another Client ID
    </li>
    <li>
      Enter the branding information and click Next (for Google Apps accounts)
    <li>
      Choose "Web application" as the type
    </li>
    <li>
      Click "More options&hellip;" after "Your site or hostname"
    </li>
    <li>
      Set Authorized Redirect URIs to: <span class="url">{{siteUrl}}_oauth/google?close</span>
    </li>
    <li>
      Set Authorized JavaScript Origins to: <span class="url">{{siteUrl}}</span>
    </li>
    <li>
      Create client ID
    </li>
  </ol>
</template>

Update Google account configuration instructions
Update Google account configuration instructions

Here's a screenshot from a Google Apps account: http://i.imgur.com/h6emA.png