Will not start after a 13-year hibernation, 1973 2.0 D-Jet Options

[Alden]

Ran well before storing in a dry shed.

Evaluated the fuel system and installed new:
fuel tank
fuel level sending unit
fuel tank screen
fuel filter
Cohline 2240 & Gates Barricade fuel hose
rebuilt Bosch 3 port fuel pump
(4) Standard Motor Products JF67 Injectors

Verified the stainless-steel tunnel and engine fuel lines are clear.

Applied 12 volts directly to the fuel pump to prime system. Fuel is circulating (can hear the gurgling of the return in the tank).

Ignition in the ON position the fuel pump primes (can hear running for 1-2 seconds).
Ignition in the START position fuel pump runs (verified with voltmeter, can't hear running due to engine cranking).

Ignition in the ON position apply throttle can hear fuel injectors click.

Engine will run with starting fluid.

Could it be fuel pressure? Fuel pressure regulator go bad from non-use or E10 fuel?
(E10 fuel destroyed my Cohline 2134 fuel hose and Bosch fuel pump)

Don't know if this could be a factor, sometimes in the START position, nothing, have to return to ON position and retry. Failing ignition switch?

What else should I look for?

Found a video from May 2017, started after sitting for 5 years.  Clip3.mov ( 2.42mb ) Number of downloads: 21
 Clip3.mov ( 2.42mb ) Number of downloads: 21

[Alden]

I disconnected the 25 pole connector from the ECU and verified continuity for terminals 12, 21 and 22. End to end for each wire there is continuity.

I removed the individual terminals from the 3 terminal connector at the trigger points. Reconnected each terminal to the trigger points
(21 & 22 left and right, 12 to the center). Now I could easily connect my multimeter to 12 & 21, then 12 & 22. Cranked engine and continuity alternated for both 12 & 21 and 12 & 22.

I connected my spare ECU. Didn't help.

Made sure the battery is fully charged.

What else can be checked?