Wiring of engine sensors

Manifold pressure sensor

Manifold pressure sensor (0-30psi): Kavlico P4055-30A

Fuel pressure sensor

Fuel pressure sensor: Kavlico P4055-5020-2 (labelled as Garmin pressure senor 15 PSIG GMN-01179 p/n 011-04202-10)

AI search

No image of the Kavlico 101690-000 sensor is provided in the available search context. 

 The documentation identifies this part as a 15 PSI Carbureted Fuel/Fluid Pressure Sender with 1/8-27 NPT threads, distinguishable by stamped markings of P4055-15G (prior to 2014-07-01) or P4055-5025-1 (after 2014-07-01). 

Another AI search

No, the Kavlico P4055-5020-2 is not the same as the P4055-15G, as they represent different pressure ranges and configurations. 

• The P4055-15G is a 0-15 PSI Gauge pressure sensor (where "G" denotes Gauge pressure). 
• The P4055-5020-2 corresponds to a 50 PSI range (based on the "50" in the suffix structure used for 50, 75, and 150 PSI variants in the search results). 
• The search context lists P4055-15G-E4A as a specific 15 psi unit used for fuel pressure, whereas P4055-5020-2 (or similar 5020-3/4 variants) is associated with 50 or 75 PSI fuel pressure applications. 

This AI conclusion is not correct!

From Garmin G3X manual

I also found

The Kavlico P4055 sensors have alternate numbering because manufacturers and distributors use legacy part markings (e.g., P4055-5G) alongside updated commercial part numbers (e.g., P4055-5025) to distinguish between old and new sensor versions, particularly regarding leak susceptibility. 

• Legacy vs. Updated Markings: Older sensors often used markings like P4055-5G or P4055-15G, while newer "v2" replacements use numbers like P4055-5025-1 or P4055-5025-2. 
• Kit vs. Individual Part Numbers: Aviation kits (such as those for Garmin G3X) frequently list legacy Garmin part numbers (e.g., 494-30004-00) on inventory lists that correspond to the Kavlico P4055 series, even when the physical sensor inside has been upgraded to the newer P4055-5020-4 or P255-150G-E4A model. 
• Manufacturer Rebranding: The sensors are manufactured by Sensata/Kavlico, which may also be referred to as just "Kavlico," leading to confusion between the brand name and the specific model series numbering. 

This dual-numbering system persists in documentation and catalogs to ensure compatibility with older equipment while facilitating the transition to the more reliable updated versions.

From the Dynon installation manual

At the site https://sarasotaavionics.com/avionics/g3x-sensor-kit-gpt

Cannot find any data sheet explicitly for the P4055-5020-2 anywhere!!

https://www.aircraftspruce.com/catalog/pdf/P4055_Data_Sheet.pdf?msockid=26ef8cb3087b68f405e9993f0991691d

These sensors must be run from +5V

Oil pressure sensor

Oil pressure sensor (0-146psi): BRP 456180 37/22

http://legacy.rotax-owner.com/si_tb_info/serviceb/sb912030_r1.pdf

https://aquila-aviation.de/wp-content/uploads/2019/08/SI_912_030R0_SI_914_031R0_OilPressureSensors.pdf

https://ecclestonaviation.co.uk/product/456180-oil-pressure-sensor/

Seeking advice from Dynon on the best method of interface between the current-mode BRP 456180 sensor and the EMS220. The method indicated below is not suitable