Connecting sprinter W906 speedo and ezs on bench

[dave11674]

Hi guys

im trying to get the dash and ezs working on the bench
sprinter W906
ezs i have pinouts and i can talk to it on the bench
but dash i can not
i was told it needs connecting on can B high and low to be able to communicate properly

so basically in the speedo connector is
twisted greens with stripe (can C) may be
twisted browns with stripe (can D)
solid brown GND
solid red with stripe +12v
black...to sam may be


in the ezs i have a white plug with same color wires
twisted greens
twisted brown
solid brown
solid red

so i joined the power lines
and the twisted pairs

now when i turn the key in the ezs the dash comes to life

but when i try talk to dash i get no communication !

anyone any ideas here

thsnks

dave