7 pin wiring question

[cdcmgmt]

So my 4rinner came with a factory 7 pin. I used to use a converter from 4 flat to 7 round with my tacoma. I wired the tacoma 4 flat years ago when I got it new. I used a uhaul 3 to 2 converter which allows one tail light wiring to control brake lights, turn signals and running lights. The question is, if I want to install a 7 pin on my tacoma to eliminate to flat to round converter, do I need to keep the 3 to 2 converter? I won't have back up lights which is fine. And our 2015 scamp doesn't have trailer brakes. But it's my understanding that if I don't use a 3 to 2 converter, I'd need to tap into both left and right turn signals. Otherwise both turn signals will flash with either directional turn. Thoughts? Thank you