[SEOvB]

Originally Posted by DiesellMinded

Its not listed in the plug ins list to change the hook location

AdminCP -> Plugins and Products -> Add new Plugin

Product: vBulletin (Or if your modification is a product choose that)
Hook Location: cache_templates
Plugin name: Template Cache For My Mod
Execution Order: 5
Plugin PHP Code:

if (is_array($globaltemplates)
{     
    $globaltemplates  = array_merge($globaltemplates, array('headernav')); 
}