Thanks for your help! , wishing you all the best for a full quick recovery so you can get back to doing what you enjoy.
No clue how they can manage efi effectively without o2 readings and incorporate load sensing in the ecu, I've been working off a fx850 efi wiring schematic that appears to be identical, again I appreciate the one you attached that confirms the missing o2 sensor.
It definitely uses the mixed 150/280 delfi connector however I've got to verify the wire gauges, they offer a bunch of different combinations.
I'm going to manage the throttle by wire with a simple buck/boost transformer like this:
📑 Output anti-reverse irrigation;. Output power Natural heat dissipation 35W, strengthen heat dissipation 50W. The module can be set to ON/OFF by default. It also has anti-backflow protection at the output end, eliminating the need for an anti-backflow diode during charging.
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It's looking for 0.5 -4.5vdc with 0 volts being idle and 4vdc governed speed.
Ive done preliminary testing with a bench supply to connectors C,D&E and it responds well to the analog voltage input.
I thank you again for your help, get yourself well!!