Using your templates and overrides, edit the file:
/includes/templates/template_default/templates/tpl_advanced_search_default.php
copy it to your templates and overrides:
/includes/templates/your_template_dir/templates/tpl_advanced_search_default.php
and locate the line around 41 that reads:
Code:
<?php echo zen_draw_pull_down_menu('manufacturers_id', zen_get_manufacturers(array(array('id' => '', 'text' => TEXT_ALL_MANUFACTURERS))), $sData['manufacturers_id']); ?>
and change the line to read:
Code:
<?php echo zen_draw_pull_down_menu('manufacturers_id', zen_get_manufacturers(array(array('id' => '', 'text' => TEXT_ALL_MANUFACTURERS)), PRODUCTS_MANUFACTURERS_STATUS), $sData['manufacturers_id']); ?>
and it will match the way the sidebox works from the setting in the Configuration ... Maximum Values ...
Manufacturers List - Verify Product Exist
Verify that at least 1 product exists and is active for the manufacturer name to show
Note: When this feature is ON it can produce slower results on sites with a large number of products and/or manufacturers
0= off 1= on