Clean LED holes to fit snugly or use hot glue to hold them in place. I used a 10-conductor ribbon cable to connect to the mainboard. I used M4 T-slot bolts and nuts to mount the display on the rail.

Connections are noted for Creality Ender series printers running 24-volt heaters.
Green LEDs are spliced into limit switches no need for resisters.
The red LEDs connect to heater outputs with a 2k ohm resistor on the negative lead.

Use superglue to attach lid to body.

Creality

Ender-3 Max

No

Yes

5%