Avionics

J243 Connector and Mag Wiring ( 4 hrs )

Connected J243 to Garmin GEA24 on RH sub-panel after splitting "Tach Sensor Mag" (connects to pin #6 on PMAG) & "Manifold Press" plus adding "Discrete #4" wire routed through RH Firewall hole (encompassed in nylon sleeve).  Then other wires from J243,  "Fuel Flow Xducer", "Oil Temp", "Oil Press", and "Fuel Press" along with "Main Amps" routed in separate nylon sleeve through LH Firewall hole (except "Main Amps" stays inside to be connected to Shunt).   Installed left Mag's "P-Lead-L" wire along with "Contactor Relay" both from LH panel area through center to LH Firewall hole.  Also from LH panel area, installed right PMag's "P-Lead-R" (connects to pin #4 on PMAG) wire along with "PMAG 3A" wire (connects to pin #5 on PMAG) and "Alt Field" wire.   Rec'd from Stein Air new P909 Alternator Power Wire with 5/16" terminal and 6" longer, so routed through RH Firewall hole.   This will fit 5/16" bolts on 60 amp ANL Fuse Limiter Block [soon will mount to inside of LH Firewall].   I believe I may now have all the wires and cables passing through the firewall.  Whew !

Garmin GEA24 J242 & J243 connectors w/sensor wires
passing through firewall.  Yellow highlights "Discrete #4"
wire added into nylon sleeve.

LH firewall exit...yellow arrow.

overall pic showing lots of wires to route and
connect on firewall side!

Reference wire routing through Firewall:

LH Firewall hole:

• Prop Control cable
• Alternate Air cable
• P212  Battery Power Wire  (ref section 43-04)
• (4) thermocouple wires for EGT 2 & 4, CHT 2 & 4. (from J242)
• P-Lead L (to left Slick Mag)
• Contactor Relay
• Fuel Flow Xducer  (J243)
• Fuel Press Sensor (J243)
• Oil Press (J243)
• Oil Temp (J243)

Also "Main Amps" wire routed to inside LH firewall to connect to Shunt. 


RH Firewall hole:

• Mixture control cable
• Throttle cable
• P909 Alternator Power Wire  (ref section 43-12)
• Discrete #4 (to white wire at alternator plug)
• Alt Fld  (to red wire at alternator plug)
• (4) thermocouple wires for EGT 1 & 3, CHT 1 & 3. (from J242)
• P-Lead R ( to pin #4 PMAG on right)
• PMAG 3A (to pin #5 on PMAG)
• Tach Sensor Mag  (from J243, connects to pin #6 on PMAG)
• Manifold Press Sensor (from J243)