Ok! I managed to get it working about an hour after I posted this! : )
This tutorial does indeed work: DevClub - SugarClub
I was just a dummy, and in the wrong directory! To Reiterate the steps I took:
If you have created the new field in studio already:
You should have a newly created file in /custom/Extension/modules/YOUR_MODULE/Ext/Vardefs/
with the name of your field.
Edit this file from:
<?php
$dictionary['MODULE']['fields']['FIELD_NAME'] ['labelValue'] =['DISPLAY_NAME'];
?>
to this:
<?php
$dictionary['MODULE']['fields']['FIELD_NAME'] = array (
'labelValue' => 'DISPLAY_NAME',
'unified_search' => 'true',
);
?>
Then change to THIS Directory: custom/modules/YOUR_MODULE/metadata/
and edit the SearchFields.php
file.
Add this to the array:
'YOUR_FIELD_NAME' =>
array (
'query_type' => 'default',
),
Save & Do a Repair & Rebuild from the Admin zone. You may need to ‘edit’/‘save’ the affected records to have them show up in Search!
Cheers,
Bryce