This forum is for discussion of topics relating to MX-3 lighting such as Headlights, Tail lights, Accessory Lights, Interior Lights, Etc. For example, Rear Euro Altezza Style Tail lights, Headlight units, LED's, HID's, Bulbs, Interior lights, Neons, Strobes, Auxillary Lights/Fogs or anything filament and gas discharge related.
Also anything dealing with the elctrical system.
According to my wiring diagram if the wire colors are Black and Red with Light Blue then it is for the US passive entry system "door catch switch". Given the Ontario location it probably is a giveaway and is not needed for you!!!
.....driver's side door has the same thing only with Black and Light Blue with Yellow wires.
For those that are really bored - look at page Z-124 of the 1993 wiring diagram......
1993 GS SE - "slow" (Stock) - SOLD
1993 GS SE - "fast" (Curved neck KLZE, OBX headers, custom 2.5" exhaust, KL36 ECU, Exedy Probe GT clutch, KL36 LSD - the real one, Lantis Type R lefthand halfshaft - unfortunately worth mentioning)- SOLD
1993 GS SE - acquired 4/28/2013, SOLD February 28, 2015 1985 RX-7 GSL-SE - SOLD
2003 VW GTI 1.8T
2009 Mazda5 Grand Touring