Hello,

My husband replaced the radiator on his 1990 Nissan 300zx (Fair Lady,
non-turbo, automatic). While working on the car he decided to change
the thermostat and removed the fan shroud, fan and several wiring
harnesses. Pending inclement weather forced him to abandon changing the
thermostat, so he reattached fan, fan shroud and the wiring harnesses.
The radiator was successfully installed. The problem is the car will
not start. The car cranks, but the engine will not turn over or even
hit. It does not seem to be getting any fuel. He is certain the
harnesses were all replaced properly and did not remove or work on any
other part. The car worked just fine prior to the radiator install,
with no trouble starting.

Any suggestions as to what to look for or try? I've since disconnected
the battery in the hopes the electrical or security system needed to be
reset (a stretch, I know, but my mechanical knowledge is limited to a
highschool shop class over a decade ago ;-p).

Noteworthy: he did not disconnect the battery prior to working on the
car. The battery was connected when he pulled the wiring harnesses. I'm
not sure how much bearing, if any, this may have on this situation but
I was under the impression the battery must always be disconnected
prior to doing any intensive work on a vehicle.