Here are some examples I can think of:
- Cutting wire in half and adding extension in the middle joining up to each halfs.
- Adding a pressure meter segment to an exisiting pipe.
- Inserting an instruction into an existing fetch/execute pipeline.
If a verb
"We will need to ___ between the controller and actuator subsystems"
or if a noun
"We will need a ___ between the controller and actuator subsystems"
Closest word I can think of is "tap" but that doesn't quite cut it for me.