I towed a sweet IS 250 hardtop convertible on Friday its sweet gauges swept back and forth, be nice if that sumbitxh would have started.

 

Just saw something on this browsing through Youtube vids. Not sure if the guy is on here, but his 2jz swapped 350Z with a Wiring Specialties conversion harness gets the RPM gauge to do the sweep. Maybe if the OP is serious he can find/ get him to send him the Wiring Specialties diagram.

 

An alternate to reprogramming the OEM software might be to keep nissans gauge faces & indicators and replace the guts with Autometer 'guts' ... my Autometers sweep at fire-up...