Pointing your domain to your car dealer website network
As you setup your cardealer-websites.com network, one of the first things you will need to do is point your domain and wildcard subdomain.
These are screenshots from a Godaddy account. If you use a different registrar for your domains then it may look a little different, but the idea is the same. The first screenshot shows what you should see after selecting > manage DNS > then Add a record > choose 'A record' to add...
After you save the above the Records list should have these two records that you just added. Make sure that you have saved everything and then it is just a matter of time before the records propagate and your site becomes "live".