Now at TTS Barneveld! Modules to turn your direction indicators into a running light. Also called dynamic or sequential direction indicators. Can be used with LED and normal lamps. See:
With 6 rear lights as in example you need 4 delay modules. With 4 rear lights only 2. The modules cost € 30 excl. VAT per item. See image and diagram.
Now also all-in-one module for both left and right up to 5 rear lights each side in one module. Price is €150. Instructions: https://youtu.be/vlYMSH-p7CU