VY S2 / VZ Calais 8 Way Memory seat into VY S1 Berlina
Note: This method removes all memory functions. Memory wiring is cut so the 8‑way controls operate independently.

1. Remove the seat and side trim. Detach the front‑left rail spring and the black earth wire between the seat base and rail.

2. Unplug all connectors. Disconnect all motor plugs, the 8‑way control module plug, the memory button module plug, and the white seatbelt plug. If the slide motor plug won’t release, leave it connected.

3. Cut memory wiring from the 8‑way control plug. Measure back 10–15 cm from the 8‑way module plug and cut off all wires leading to the memory system.

4. Do the same for the front and rear motor plugs. Cut them free from the memory loom, keeping as much wire length as possible.

5. Cut the backrest motor plug free. Use the white backrest plug (not the yellow/orange airbag plug) and keep maximum wire length.

6. You should now have only the required motor plugs:

• Front motor
• Rear motor
• Backrest motor
• Slide/rail motor (if removable)

7. Set aside the memory loom. It’s no longer needed but can be used later to extend power/earth.

8. Strip out the memory‑related wires. From each motor plug (not the 8‑way control plug), remove only the small wires that originally went to the memory system. Use your loom diagram to confirm.

9. Strip and join the remaining wires. Follow your loom diagram to connect each motor wire correctly. Extend power and earth as needed and fit a new plug or prepare for hardwiring.

10. Tape off the seatbelt loom. The extra white seatbelt plug can simply be taped and heat‑shrunk.

11. Extend wires if required. Usually only power and earth need extra length to avoid tension during seat movement.

12. Route wiring safely. Run all plugs and wires along/under the seat rails, keeping them clear of hinge and rail pinch points.

13. Reconnect the 8‑way control module. Connect power and earth to the vehicle plug and test each motor for correct direction.

14. Refit the seat to the rails. Reconnect the backrest motor plug and earth strap, reinstall the front‑left spring, and test backrest movement.

15. Refit the side trim. Ensure all wiring is taped and clear of moving parts.

16. Reconnect SRS and seatbelt plugs. After leaving the battery disconnected for ~30 minutes, reconnect the airbag and seatbelt plugs and refit all trims.

17. Enjoy your working 8‑way VZ Calais seats in your VY S1 (and VT/VX with 2‑wire power).

If anyone has any troubles don’t hesitate to message me and I can try to help as best as I can. 

Pin	Wire Colour	Function	Motor Plug	Used By	Notes
1	Green/ Blue	Slide Motor	Slide / Track Motor	Slide Motor
2	Green/ Red	Front Motor	Front Motor	Front Motor
3	Yellow	Rear Motor	Rear Motor	Rear Motor
4	Pink	Rear Motor	Rear Motor	Rear Motor
5	Black	Front Motor	Front Motor	Front Motor
6	Red	Power	—	Car Seat Power Plug
7	Maroon	Backrest Motor	Backrest Motor	Backrest Motor
8	Brown	Slide Motor	Slide / Track Motor	Slide Motor
9	White	Backrest Motor	Backrest Motor	Backrest Motor
10	Blue	Earth	—	Car Seat Power Plug	May also be Brown w/ Black trace

🔌 Car Seat Power Plug

Wire Colour	Function
Orange	Power
Blue	Earth
Black	—