REVELTRONICS

Good day,

i'm currently wiring my UTComp3 in my '00 Galant V6.

I'm planning on using all stock sensors apart from oilpressure and oiltemp.
Oiltemp -> https://www.ebay.de/itm/323051044742
Oilpressure -> https://www.reveltronics.com/en/shop/60 ... -5v-detail

So, I'm kinda puzzled where to connect which cable.
I guess the oilpressure sensor would need to be connected with the red wire (+5V) to Pin A20 (AdcVcc1 = 0-5V, +5V PULL-UP), black to any GND, green to Pin A8 (Adc1 = 0-5V).
Whereas the temperature sensor als would need one wire connected to Pin A20 (AdcVcc1 = 0-5V, +5V PULL-UP) and on to Pin A9 (Adc2 = 0-5V).

so far correct?

As I'm not using the Pro-Version, I guess I can't implement another sensor?
I'd like to connect the stock engine temp sensor (see attachement) - any chance to do that?

Best regards

Oil pressure sensor should be powered from +5V.
AdcVcc1 is only power & measure for resistance sensors (it's pullup voltage only), you should use +5V power e.g. from DS18B20_X_VCC (e.g. pins A6 or A18 are +5V power). Sensor's output (green wire) should be conencted to AdcX 0-5V input (e.g. Adc1). Black wire to UTCOMP Ground.

Oil temperature sensor should be connected to AdcVcc1 and second wire to ground.

Now you have still one analog input left free (Adc2 0-5V), so you can connect signal from your stock coolant temperature sensor (ecu pin 44) to this input and it should work (sensor is already powered from ECU). You will need to scale it by measuring 2 voltages for 2 different temperatures, e.g:
20C = ... Volts
80C = ... Volts
and use excel from this thread viewtopic.php?f=28&t=58 to scale it (NTC U tab).

Thank you very much for your quick help!

decided to swap the OilTempSensopr according to this tutorial (click).

So, only question left - can a DS18B20 sensor and the OilPressureSensor share Pin A4 (DS18B20-A_GND) or should I ground the OilPressureSensor to chassis, e.g. the engine? (Only got a 5core cable, so one core short...)

best regards

It is recommended to use separate grounds from UTCOMP (more immune for external noise), but if you connect shared ground then it will work too and probably you will not see any difference.