Great, you have confirmed the wire colors are wrong at the controller board. This is helpful.
We also know, that those wires are connected directly or indirectly to the ignition system. Now, according to the manual (and common sense) this is not correct. Thus the refer is only on when the key is on. Not helpful.
They need to connected directly to the house battery. So, just for a confirmation test, disconnect the two wires from the controller board, and then run jumpers to the house battery and see if the display panel is lit. If so, you then need to run permanent wires to the house battery.
If you can salvage some of the original wires perhaps you can use them (but, make sure to connect black to negative and white to positive). If you have to use different wires, make sure they are multi-stranded. Single strand wires don't handle flexing well and tend to crack.
Let me know how the test goes.
