My source only lists a mazda 6 for that year..doesn't specify if wagon or euro version but see if this helps anyhow....good luck. If you need further help on how to do the door lock setup let me know and I'll send a diagram.
The doors lock and unlock through the same wire. To lock you will use a resistor to ground with a relay..to unlock you use another relay but send a ground direct.
12volts  black (40A), BLACK/ yel (30A)   +   ignition harness  
Starter  BLACK/ blue   +   ignition harness  
Second Starter  N/A        
Ignition  blue   +   ignition harness  
Second Ignition  N/A        
Third Ignition  N/A        
Accessory  BLACK/ red   +   ignition harness  
Second Accessory  BLACK/ white   +   ignition harness  
Keysense  WHITE/ blue   +   ignition harness  
Notes: Using the status output from the remote start to trigger this wire will disarm the factory alarm without unlocking the doors. 
Power Lock  lt. green   -   driver kick or door lock module  Notes: Lock is negative trigger thru a 1000 ohm resistor. Unlock is a straight negative trigger. MUST use relays.The door lock control module is located above the passenger kick panel. Power Unlock  same as power lock wire        
Lock Motor  RED / blue   5wi  driver kick or door lock module  
Notes: The door lock control module is located above the passenger kick panel. 
Unlock Motor  RED / green   5wi  driver kick or door lock module  
Notes: The door lock control module is located above the passenger kick panel. 
Parking Lights+  lt. GREEN/ black   +   driver kick, 14 pin plug  
Parking Lights-  RED / white   -   headlight switch  
Hazards  blue/orange   -   switch or door lock module  
Notes: The door lock control module is located above the passenger kick panel. 
Turn Signal(L)  WHITE/ black   +   turn signal switch  
Turn Signal(R)  WHITE/ red   +   turn signal switch  
Reverse Light  RED / yellow   +   driver kick, 14 pin plug  
Door Trigger  GREEN/ orange   -   driver kick or door lock module  
Notes: The door lock control module is located above the passenger kick panel. 
Dome Supervision  yellow/black   -   driver kick or door lock module  
Notes: The door lock control module is located above the passenger kick panel. 
Trunk/Hatch Pin  brown   -   driver kick or door lock module  
Notes: The door lock control module is located above the passenger kick panel. 
Hood Pin  gray/red   -   pin switch or theft module  
Notes: The theft-deterrent control module is located in the center console. 
Trunk/Hatch Release  yellow   -   switch or door lock module  
Notes: The door lock control module is located above the passenger kick panel. 
Power Sliding Door  N/A        
Factory Alarm Arm  blue   -   driver kick or door lock module  
Notes: Meter this wire while turning the key in the driver door key cylinder.
Arm is negative trigger thru a 1000 ohm resistor. Disarm is a straight negative trigger. MUST use relays.
The door lock control module is located above the passenger kick panel. 
Factory Alarm Disarm  same as factory alarm arm wire       
Disarm No Unlock  use key sense wire        
Tachometer  NOT blk/wht or grn/stripe   ac   any ignition coil or coil pack  
Notes: On the 4 cyl models use the wire that is NOT BLACK/ white. On the 6 cyl models use the wire that is NOT GREEN/ stripe. 
Wait to start  N/A        
Brake Wire  GREEN/  YELLOW   +   brake pedal switch  
Parking Brake  brown   -   parking brake switch  
Horn Trigger  PURPLE / white   -   switch or door lock module  
Notes: The door lock control module is located above the passenger kick panel. 
Immobilizer Bypass  Required: Type:Transponder