LtAP mini internal antennas

Hardware MikroTik hardware general
1

Hi, can who explain the color scheme for the internal antennas of LtAP mini?
This model supplied without LTE module and factory antennas connection unknown.
The internal antennas have three pigtail with different colors - white, black and grey.

How to find out Main, Aux and GPS?

2

3

My antennas have three pigtails, not two like your, see https://ibb.co/ZfzmZrf
Also, the antenna circuit boards themselves are poorly visible in your photo