DTM does not require you to use a Data Layer or put extra scripting in
that data layer to track events. Be sure to check out the help docs at
https://marketing.adobe.com/resources/help/en_US/dtm/
I've added a screenshot here. In an event based rule you set the event
to "click" and then the tag to "a" with the innerText attribute of the
"Get the Map". Then you would put the 3rd party JS in the section down
below in the rule.
Julia,The heartbeat modules and the others should work fine with this
new deployment method. Do you have a site/DTM property that we can look
at? -Rudi