[projectRDM]

All S14s have a white plug. We've been over this before.

As for the harness, the 1996 harness is NOT the same as the '97-'98. You can repin and adapt it, but it's more work.

For example, the later models do not use a thermo control amplifier for the A/C, so there's no control wire from the ECU to operate it on the '97-'98, only a signal wire.

The rear O2 sensor is a 4wire, versus the 3wire unit on '95-'96 models, so you have an additional lead there which would require a matching lower harness.

Also, 1996 base models are not prewired for the variable intermittent wipers so there wouldn't be a lead in the harness for it to run that option (if you got a base model harness). All '97-'98 models are prewired for variable intermittent, even in cars with fixed intermittent control. The wiper motor plug is completely different on '97-'98s since the motor itself is different. These are part of the engine harness so that would matter as well.

I'm not recalling any other differences but there may be more.