How do I access the Google Maps APIs over HTTPS (SSL) using a Maps API Premier client id?
To access the Google Maps APIs over HTTPS you must first notify the Maps API Premier support team of the HTTPS sites on which you wish to use the Maps API. Once the support team have confirmed that your Maps API Premier client id has been enabled for use on these sites, you can load the Maps APIs over https as documented in the Google Maps API Premier Developers Guide.