How to process field input so b52 goes into database as B-52
OK figured it out.

hook_node_presave() is what I want and it can only be called from a module I think.

Found the answer here: node_presave doesn&#39;t work

function nodepresave_node_presave($node){
  drupal_set_message('nodepresave DEBUG: PRESAVE Called');
  if ($node-&gt;type === 'vehicle') {
    drupal_set_message('nodepresave DEBUG: node-&gt;type === vehicle');
    drupal_set_message($node-&gt;field_id_number['und'][0]['value']);
  }}