An unfortunately common issue for Gaydon era Aston Martins is that they can get condensation in their tail lights, which subsequently damages the control boards for the LEDs, when then leaves them inoperable. One way to mitigate this is to drill vent holes in them. This video shows how to do it.

DISCLAIMER
As always, follow all safety protocols. Don't undertake this task if you aren't comfortable with it, fully understand it, and are capable of completing it. The information provided may be incomplete or inaccurate. You are ultimately responsible for anything you do. Neither Redpants, LLC or myself is responsible or liable for anything that may occur.

For more information, check out my DIY Guide:
https://www.redpants.lol/diy-tail-lig...

For my Tail Light Repair Kits, check out my Online Store:
https://shop.redpants.lol/product/tai...

And for information about the lighting systems in general, check out:
https://www.redpants.lol/info-lighting