0 to 5 Volts working on multi-meter but not on auduino

fairly new arduino, getting required levels on output of ss3000 using multi-meter arduino board cannot read signal sensor (have many other types of sensors working , if unplug sensor , put 10v temp output shows correctly on arduino), looks floating earth or similar, please advise may doing wrong.  using pair of resistors divide 0-10v output of ss3000 arduino 0-5v range.

sensor - deltasense motron smart sense 3000 humidity sensor (12v input, 0-10v output)

using computer power supply has both 12v , 5v rails:

[computer power supply]
gnd -> ss3000, arduino, voltage dividers
5v -> arduino
12v -> ss3000

[ss3000]
temp (0-10v) -> voltage dividers
humidity (0-10v) -> voltage dividers

[voltage dividers]
divider 1 (pair of 10k resistors) -> a0 of arduino
divider 2(pair of 10k resistors) -> a1 or arduino

images attached.

if can assist great.

- william

i can't see wrong diagram must different actual circuit have.
any chance of posting photograph of wiring?

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