I noticed some connectors in the engine bay that are not connected, I was curious to see if anyone knew what these connect to. I've looked through the wiring manual, but its hard to identify from the mazda diagram + these don't look like the traditional connectors on the harness.

These are located on the passenger side of the engine bay under the wiper motor. There are 2 blues ones and 2 orange ones, it could be 1 additional set since the previous owner had Mazda redo the engine and the harness. I've posted some pics below...

 

Impact sensor in the front bumper for the airbag

 

Yep, air bag plugs.

 

any idea where the connector plugs into, I don't see the male side anywhere. Also, should there be 2 sets of orange and blue or just be 1 set?

 

There should be an impact sensor at the front of the car (small black box behind front bumper). The leads from this sensor plug into your connector near the ABS/fire wall. All of the air bag sensors have one blue and one orange connector on each end.

 

Thanks, Ill go digging around it tonight...hopefully that other side is not missing

 

On a Miata, the blue plugs are wiring for the air bag system to the sensors, as mentioned above, but the orange plug is for the horn.

[Edit: Just checked my '94 manual; same for the FD. See page Z-66 (Section F-4) for the wiring.]

 

should be the.same - i bought a miata steering wheel hub kit that came with plug and play resistors and they were also plug and play on my fd.