Judging from the nameplate both drivers will require the boards to be wired in series. How many boards did you have connected to 600 watt driver when it was flashing?
Something isnât right here. I see at least 1 board that is wired negative to negative, and you canât have that on a series circuit.
I also noticed 1 board looks aftermarket. Not to say it wouldnât work, I just canât tell which connections are + vs which connections are -. As long as voltage and current ratings of this board are similar it wonât matter, but youâll need to make sure itâs using right connections.
Iâm not in good shape to draw you out what this should look like, but iâm sure you can find it online. Check YouTube for something from growmau5, greengeneâs garden, or led gardener (series wiring). All of them should have a tutorial on how to do it.
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Could you please draw me up a diagram so i can wire this light correctly? Its for the hlg r spect 4 board constant current type driver @Skydiver @DarhkGrows thanks
Youâre better off asking @dbrn32 im no expert sorry 
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Just like below using 1+ and 1- per board.
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FYI
I ordered some replacement boards for 2 of my hlg 240 r spec lights directly from HLG awhile back and they came without any info printed on the boards as the old ones had and the only markings were a black permanent marker dot on white wire connectors. I assumed incorrectly that they were the negative connections because it was black color as normally black is negative and red is positive well I was wrong the mark indicated the positive connect and got them working fine.
I had called HLG at the time and left message and when they called back they confirmed this was the case and I did mention to them to get and use a red marker lol.
Also the reason given for the boards not having any markings was due to the sealing layer applied to them after production if I remember the conversation correctly.
Thought Iâd share that tidbit.
So if that unmarked board has black marker on the white push connector on the board that indicates itâs a positive input @Andyman
Hope this helps
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Appreciate you sharing this.
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With my feet being at the bottom of picture, its positive all the way across
Right above that is neg all across , same with the next row
Then pos across top
Now both positive sides come together in the back and connect to the red (hopefully positive) line coming out the driver and you guessed it , black connected to im hoping the purple is neg coming from driver
There wont be any + to + or - to - connections in a series circuit.
It should be + from driver to + on board 1. Then - from board 1 to + on board 2. Then - from board 2 to + on board 3. Then - from board 3 to + on board 4. Then - from board 4 to - on driver.
Purple doesnât sound right for dc - on driver. The driver power circuits are usually black/red or brown/blue. This info is typically listed on driver label.