User guide
83 
Pressure Transducer Installation 
Firewall Installation using Van’s P/N: VA-168, 3-port manifold 
mounting block. 
Oil Pressure Transducer Installation 
Mount the oil pressure transducer in a stationary location. 
Connect the transducer with aircraft grade hose and fittings. 
You can find the proper oil pressure connecting port in your 
engine manual. Your engine must have a pressure fitting 
with a restrictor hole in it. The transducer is supplied with 
1/8” NPT pipe thread connections. The case of the sender 
has to be connected to ground. The Oil Pressure transducer wire should be connected from the harness to 
the transducer by crimping a standard #8 ring terminal to the wire. 
Pin 6  White/Yellow 
NOTE: The pressure rating (100psi or 10bar 150psi) can be found stamped on the bottom hex fitting 
of the transducer 
P/N  Pressure  Manufacturer  Color  Terminal  
41,105  0-100 PSI    Stewart Warner  Gold    #8 Ring 
41,115  0-150 PSI (10 bar)  VDO      Silver    #8 Ring 
CAUTION: NEVER CONNECT THE PRESSURE TRANSDUCER DIRECTLY TO THE ENGINE. 
Fuel Pressure Transducer Installation 
Mount the fuel pressure transducer to a stationary location. Connect the transducer with aircraft grade hose 
and fittings. You can find the proper fuel pressure connecting port in your engine manual. Your engine 
must have a pressure fitting with a .040” or smaller restrictor hole in it, this prevents the fuel pump 
pulsations from damaging the transducer and will slow the flow of fuel if a hose were to fail. The transducer is 
supplied with 1/8” NPT pipe thread connections. The case of the sender has to be connected to ground.  
The Fuel Pressure transducer wire should be connected from the harness to the transducer by crimping a 
standard #8 ring terminal to the wire.  
If you are using the P/N: 41,215 (0-30 PSI) transducer you will need to use a ¼” Fast-On terminal for the 
transducer wire and a separate ground wire connected to the second terminal. It does not matter which 
terminal is used for the sensor wire or ground wire. 
Pin 8  Brown 
NOTE: The pressure rating can be found stamped on the bottom hex fitting of the transducer 
Carbureted Engines 
P/N  Pressure  Manufacturer  Color  Terminal  
41205  0-16 PSI    Stewart Warner  Gold    #8 Ring 
41215  0-30 PSI (2 bar)  VDO   Silver    ¼” Fast-On (Signal & GND) 
Fuel Injected Engines 
P/N  Pressure  Manufacturer  Color  Terminal  
41305  0-60 PSI    Stewart Warner  Gold    #8 Ring 
41315  0-80 PSI (5 bar)  VDO   Silver  #8 Ring 










