The switch module included with the M4 and M6 battery cases is needed to get the battery pack correctly connected to the GL300 series tracker. The switch positioning for the unit should be as follows :
If you are looking at the module with the LED at the lower left and the wire harness at the top the switch positioning, from left to right should be as follows : Down, Up, Down, Down.
This is the proper basic configuration for the unit. Please see the image below: