WMS BB2 Bill Bezel green LEDs

[Stayouttadabunker]

While the main door is open, the green MEI BV bezel lights are OFF.
The MEI BV head itself has a slow flashing green LED.

When closing the main door, the green LEDs on the bill bezel will momentarily flash ON, but go off immediately, and stay OFF.
The MEI Cashflow SC6607 BV will accept all bills 4 directions, all day long....but the green Bezel lights stay OFF.

Before anyone asks...Yes, I swapped bezels with known a working bezel....no change.
And that black 2-row, 8-pin bezel connector housing with the green, black, and white wires is the hardest thing in the world to pull off, without pulling on the wiring!
Best way is to pull off yellow handle, remove the black cover with the 4 Philips screws, and then grasp both sides of the black housing with a fine needle-nose pliers to work off the connector from the male pins.

I'm wondering why the green lights won't stay on?