Dynon DS-10 no oil pressure

[Wheels]

Called Dynon today to walk through the problem, Oil pressure in the Dynon reads dashes, not numbers. Dynon said configure the DS-10 for the sender on the engine, (Supplied by Rotax) but the panel still shows dashes, not numeric value. The technician on site took the 200 ohm resister out of the circuit on a hunch and voila, the number reads Zero. But
1.turning the prop by hand, top plugs out, no oil pressure indicated.
2. Turning with the starter no pressure indicated,
3. firing the engine up for 5 seconds, no pressure indicated.
4. Zero time engine, Purge complete, oil serviced to specs, oil present at the lifters, yet, no Dynon pressure. I should have stuck with steam gauges, on the Model IV, but hind sight is 20/20. Any ideas other than obviously running a direct pressure gauge in the cockpit and defeating the reason for this electronic whiz bang?

[Dorsal]

First connect a temporary steam gauge to make sure the engine and sensor are working (I suspect they are). Can you post a diagram of how you have it wired? I can lend you a steam gauge if you need (went through something like this and still have the gauge).

[Dorsal]

The unit can not work without the resistor, it is a voltage divider showing the ratio of the sensor vs the resistor. Do you have a decent multimeter? if so check the resistance of the sender (I believe that should be ~10ohms at 0 psi) and check the make sure the 200 ohm resistor is in fact 200 ohms. With the resistor in the circuit what is the voltage at the white wire?
Is this how you have it wired ?

[Wheels]

Thanks Dorsal,
Yes, its wired like that. The power wire (red) reads 12 volts, the white wire reads 5 volts at zero pressure.
The P/N for the pressure sender o the engine is 456180.

[Dorsal]

is that 5 volts with the resistor in place?

[Wheels]

Good Question, I don't recall the tech telling me that. I'll call him. I see the part numbers are vastly different between you and I. I"m headed into the city, (we live in a rural area of North Idaho) I will try and find a UNF fitting for the lube pump and I"ll put a mechanical gauge on it to make sure we are ok there. thank you for your offer, I'll put a gauge in the tool box for the next guy in the neighborhood. I"ll check the parts book to make sure of the fitting and thread size.
What are you thinking about the resistor placement and voltage?