Tonight I've finished the M-Lock installation. Do not forget to disconnect "-" battery terminal before each work.
Solder the battery connector to the fuse
Cover the two extensions wire from the fuse box by the boot to prevent wear
Here is the relay connector from the M-Lock kit
Cut off the crimping features from the relay connectors and solder them with the extensions wires from the fuse box
Connect the extensions wires from the fuse box with the relay from the M-Lock kit like on the picture below. The wires connectors location each other does not matter.
Trim the M-Lock sensor wire
Prepare two black wires and solder them together with the relay connector
I use copper wire to hold them together while sildering
Install the connector boot and the heat shrinkable tube on the connector
Solder the battery connector to one of the black wires
Prepare a green wire and solder it with the relay connector. Actually I would recommend you use a brown wire for this, I use the green wire because I don't have brown wire.
Solder the ends of the black wire, the green wire and the red wire of the fuse with the wires of the M-Lock sensor like on the picture below
Apply heat shrinkable tubes
Connect the wires with the relay from the M'Lock kit like on the picture below
Cut off the Key Switch socket from the main harness
Strip all these four wires
Tie all these wires with copper wire and apply tin
Isolate the wires with a heat shrinkable tube
Now let's clean more space under the headlight. Cut off the useless Aux plug
Isolate every of two wires separately using heat shrinkable tubes
Connect the black wire and the red wire of the M'lock harness with the battery
It works!
Apply outdoor double-side tape on the M-Lock sensor and on the M-Lock relay
Locate the sensor and the relay like on the pictures below. The sensor should be attached on the plastic bottom face. Do not locate the sensor on the aluminum faces of the seat frame, it will not work.
Done!