I know this thread is old, but to save starting a new thread I thought I'd update this thread with info.
Good source for the sr20/16ve solenoid plugs:
RB25DET NEO VVT Connector - Wiring Specialties
RB25DET VVTI Solenoid Connector - Wiring Specialties
for 9 bucks each, it's nice to have brand new connectors. If on the cheap you can re pin a knock sensor plug (only has one pin) and file down one of the "ears" on your other solenoid and use a iacv or other Sumitomo RS series plug.
Also connected to that same harness is a the VE 8 pin distributor plug. The JDM s14 fusebox connector happens to be the same. I got mine here as well:
JDM S14 Silvia Fusebox Connector - Wiring Specialties
Hopefully this helps someone missing their solenoid and distributor harness like I was