Below is the Google AdWords Conversion Tracking code for conversion action Shopper Registration. For the tracking to work, you’ll need to make sure you include both the code snippet and the appropriate ‘onClick’ tags from one of our examples. This tells AdWords to record a conversion only when a customer clicks on a specific button, link, or image. If you don’t include an ‘onClick’ tag in your HTML, no conversions will be registered.
For examples see https://support.google.com/adwords/answer/6331304?&hl=en_US.