Working on my new project High Speed. I got everything to work except the lights behind the back glass. After checking fuses and ground wires, I tracked the 4 wires back to the board. They all go back to connector 3J8. The connector has been replaced (easy to spot it's a different color). I reseated it a couple of times and I now have 1/2 the lights on. I may have to try and clean up the pins on the board as they are not shiny clean. It also looks like the connector is burnt. A little disconcerning as it has already been replaced once already. I noticed that the actual pinning is different than the wiring diagram. Yellows and violets are switched. Although those aren't causing the current issue, is there something else that this will affect?

Is this a remove the board and solder it on thing (Nontechnical terminology)?

Where can you get the header connector? I've looked in the usual parts sites. Maybe I'm blind or don't know what to specifically search for.