Hi again,
Just a update, new VR715 has a plastic cover and is glued or epoxied on, seems to work 23 bucks was cheaper than other ones I found, not sure if any of the others were solid state.
A side note a few years ago I bought 2 from Ames, that were correct in appearance, although I had to take a file to the opening to get my plug to plug in, was a bit of a pain, it didn't work well or very long, the one I replaced was from a 67 225 that was a parts car, got 3 years out of it before it fried the battery, luckily it was 3 days in warranty so only cost 23 to repair.
Regards,