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When upgrading your Thunderbird with modern, ultra-bright LEDs, you also need to upgrade your stock turn signal flasher module in order to ensure correct LED operation and performance. This flasher module is specifically made for 6-volt positive ground systems, allowing for the use of modern LED lights on your classic 'Bird. It's easy to install, and comes with a limited lifetime manufacturer warranty. Made in the U.S.A.!
| Make | Model | Years |
| Ford | Thunderbird | 1955 |