Charles! A big SORRY about taking so long to answer, I didn't even know this page existed (or I forgot) until today.
I DO still have my original assemblies, and I kept the original metal frame and plastic lenses even though I found extensive corrosion. HERE is my blog post:
Brake, Turn, Running Lights....
If I find moisture inside again, I would just use clear silicone on the tops and sides. Leaving the bottom open to drain. Too easy to repair those sockets so I just don't care to toss assemblies like these.
NO, didn't not replace the bulbs or assemblies with LEDs. Why? Because I have handfuls of the incandescent bulbs I bought in Mexico for $0.10 each. That's incentive enough to use them instead of LEDs.
Anywho, sorry about the delay...I just did not know about your message.