led switch back

I saw these headlights (link and screenshot below) a lot on other g-bodies and even f-bodies, does anyone here who has them have any feedback on them? I was thinking of ordering a set but I wanted to do some research on the work needed to set these up.

Hello. I'm in need of help, so I'm reaching out. I have a 1980 malibu that I installed the switchback lights in. Before I changed the flasher, the lights were white, hit the turn signal, solid amber. I replaced the flasher with a ll552 led flasher, and they are not switching between the two when...