I picked them up through 'offerup' - from a local F150 owner that couldn't get them to work. I confirmed they were 7443's, spot-tested them with a 12v, and walked away with a pretty good deal.Which ones? And do you like them? They work/perform like they're supposed to?
They work very well. The only unexpected component is that the "switchback" doesn't interleave the white through the amber cycling(*). When the turn signal engages, the white LEDs turn off. The whites return about 1 second after the turn/hazard cut off.
The biggest takeaway is that the turn signal indicator with the switchback LED is now crisp and sync'd with the amber halo rings on the LED headlights and (halo) LED fog lights. The original light would lag quite a bit behind the headlamp/fog light. It was quite noticeable, but now a non-issue.
So overall I really like the bright white, indicators are all sync'd up now, and I'm very happy with the difference.
(*) Although I expected the white to interleave with the amber when the turn signal is engaged, the manufacturer page for the product states that discontinuing the white during the turn signal is intentional for better visibility. I can live with that.