What is this ?
On a practical side, crimping three wires on a terminal is not going to work well.
So you may find the ECU power wire tapped in at another location.
(Factory harnesses with electronic ignition usually have a splice tap starting around '72.)
Here's a general scheme of the 5 Pin ECU wiring.
ECU harness wire colors
will vary.
(based on Fig 19-3 in the MP/DC
Speed Secrets collection of bulletins)