Adding fields to the search bar in Blacklight 8.3

[Peter Eichman]

I am working on adding a feature to our Blacklight application to allow users supply a start and end date in two separate text fields, which can then be transformed by the search builder into a Solr "[YYYY TO YYYY]" style query. I have been able to do everything except add those fields to the HTML of the catalog pages.

What is the best way to expand the default search form to include additional inputs like this?

Thanks,

-Peter