I'm working on an 84 turbo 300zx.

There is a single wire that connects on the driver's side of the intake
manifold.  When I was working on the motor the wire broke off and I
need to replace it.

Problem is, I don't know what it is.  Some kind of sensor or something,
with a single lead?  I've got a Haynes manual, but it's horrid and
doesn't have any good info on this.

The wire goes straight into a sensor that is screwed into the intake
manifold.  There's either no connector or the connector was gone by the
time I got the car.  It was just plugged directly in.

I have searched the web and found a single wire that goes to the fuel
temp sensor--that's not it.

TIA!