I have decoders in my Y turnout so I do not need to use the M83 or M84 in my case but I would suggest that you need two addresses for the Y, one for the left turnout and one for the right.

springboard,
On your picture of the M83 I see that you have labelled the 2 rightmost ports as 27. I assume that was a misprint because m83's, like the old K83's, only hand out 4 sequential addresses from the beginning address, in this case 25. So the last address will be 28 and cannot be changed.

If you need 27 as the address for your Y switch you need to set the M83 dip switches to address 25 (switches 1,2 & 3 set to ON)
Since the Y switch has 2 solenoids you will have to plug in one set to port 27 and the other to 28.
The CS2 or CS3 may combine the commands and issue the appropriate cammands to the respective ports.

See manual page 15 under "Setting the Address with the Switches"
and page 19 for m83 dip switch settings.

-=tom=-

thanks everyone, Ray Sinclair from Marklin had to do a few things with the Cvc's along with adjusting recognizing MFX accessories under edit screen, delete few items re install, my wiring was correct. the motor on one solenoid was bad. thanks for all you input