pin 1 will be screened on the pcb and / or the solder pad for pin 1 is usually square where the rest of the pads are round.
Yes you will need to get a trim pot, otherwise, you may not be able to see the display
Yes you can hook the A and K to 5v and gnd. but you must make sure the old connections from the 300V inverter have no way to become connected in any way, else you will let the magic smoke out of your new display…
I have a sample video of installing an OLED- it might help you to watch it just go to youtube or google and search “djtbs1 oled emax"
-T
I see i should probably add a trim to pin 3. and is it ok to connect A and K to vss and vdd? should i just wire A to one of the red leds and connect K to any ground? I see some other conversations about installing displays but the information i'm getting from those conversations is spotty.
and also about the pinout... when looking at the emax display from the top, is pin 1 on the bottom right? I guess i can answer this myself by just taking it apart, but I don't want to that until the parts arrive.