That connector is the AAMA standard dollar bill validator connector. It's an AMP "Commercial Mate-n-Lock" series.
As for the monitor, reduce green cutoff and maybe drive (both on neckboard). Also perhaps turn down screen control (on flyback). If that doesn't fix it, check green drive transistor and RGB amp. If those are good, you may have a tube short (possibly work-around-able).
Well Mon Motha had the magical answer for this one! Here's my latest update:
As many of you have seen in my prior posts, I brought home a Lucky and Wild game on November 5th- my theorized goal was, if it wasn't too far gone, to have it up and running by Thanksgiving weekend...
The flyback was blown on it, the 1 slo blow fuse in the cab was blown, and the connector to the boards was charred. I rebuilt the monitor on 11-21 with parts from Bob Roberts, and after doing a check with the rebuilt chassis, the video came back online.
The biggest mystery was that damn PCB connector. With the help of members from 3 websites, it was concluded that the connector was a "mate n lock" connector that was available via Mouser Electronics. It was also told to me that this type of connector was the industry standard for bill acceptor units. At the time that I was told that, I didn't give it much thought, although it was interesting info to know.
Yesterday I was planning to order my parts from Mouser, but in the AM I decided to install blinds in the garcade window, and while I was out there, I noticed an old bill acceptor lying in my parts bin. I knew I had one in the pile, but I did not remember its age or what connectors were on it- I went over and picked it up, and sure enough, looking me dead in the face was the connector type I'd been searching for! Better yet, this was the specific connector that would replace the worse of the 2 charred connectors on the LNW!! I scampered over to the Lucky and Wild game to match up the connectors, and the only diff was that the connector on the bill acceptor had 20 gauge wires going into it, where the one on the Lucky and Wild has 18 ga wire. I'm not planning on leaving this game on all the time, and on top of that, I simply needed to know at this point if the boards were even functional, or if they too had been damaged. So, I cut out the bad connector, and spliced in the one from the bill acceptor.
Since I had no idea what caused the death of this game in the first place, I put my finger on the power switch, and put my head down and closed my eyes I flipped the power switch, and was amazed to hear speech coming from the LNW. I got my old butt up as fast as I could and fumbled around to the front of the game, and found the attract mode running beautifully in all of its 25" eye-candy goodness.. I screamed "YEAHHHHHHHHHHHHHHHHHHH!!!!" My daughter came out to find out what I was doing, and it was great to hear her gasp a breath of surprise........ She said "Daddy you got it working!!!!!!!" Immediately followed by: "CAN I PLAY IT?

?!!!!!!!!!!!!!"
I ran through the test screen to flip it to set it to free play, and found out that the credit switch is what's supposed to allow you to navigate through the different test screens. Well, for some reason, someone never bothered to wire it up. So, just to appease my daughter (and myself), I backed out of the full test mode so we could try out the game, TOGETHER.
I have to say that for anyone who has never played this game, you have to find someone or someplace that has it and try it out. It is hilarious! I was trying to grasp at the time that I first learned about the game, the concept of a driver game where the driver also has to shoot a gun at the same time. It seemed to be a little bit much to me. But let me tell you what- it's exhausting and just insane fun at the same time. And to play at the same time with my daughter made it even more funny, because she kept saying over and over, "This game is just CRAZY!!!" In the meantime, she proceeded to play between 30 and 40 games of LNW up until her bedtime!! And this morning, when she got up, I'm sure you can imagine what the first thing was that she wanted to do.
The only remaining tweak is to get the 2nd player X-Y gun to work as well as the 1P gun. When you move the gun quickly across the screen, it seems to lose its place. After approximately a 2-second delay, the crosshairs appear on the screen again. If anyone has any thoughts on that, please let me know!