Looking For LED lights for my 68 Barracuda

The few logic modules I have owned all failed after a couple years.

That's why to buy good modules instead of shìtty ones. But it doesn't sound like you're talking about a module to add turn signal function to the side markers, it sounds like you're talking about those "logic modules" that claimed to make it easy to install a 3rd central brake light on a car with combination brake/turn signal lamps. Those were all shìtty and yep, they all failed early and often.

A scotch lock tap

…is a recipe for corrosion and failure. Instead, use Posi-Taps.