Quote:
Originally Posted by Luns
Amazing job!
I'm in the US, so wouldn't need to do this mod. However, conversely, I don't have the rear fog light that's available in kph-only markets. I wish I could convince my US-market body ECU to properly support one.
Just one minor detail I spotted: in your photo of the switch PCB, there are diode symbols on the board that spell out their polarity. The individual Odometer and Display LED lines are switched grounds (cathode) while the one marked LED ground, according to the symbols, would be a positive voltage (anode).
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Right you are on the polarity of the switches, , would have caught that but never saw the point of installing the LED's as the buttons are solid with print, on every switch set I've seen.
With regards to the rear fog light, my Japanese GT86 also did not come with one (I believe it was not available at all in Japan on any model of the GT86 or BRZ.
But as a rear fog light was a legal requirement for the process of taking the vehicle with me and registering it for use on UK roads, I needed to have a working rear fog light.
What I found was that the loom in the boot that goes under the lower lip trim of the boot seal, has connection there, and the source side of the connector has an additional wire fitted to the connector that was unpinned on the connected section of loom.
So how I went about it was removing my center lower light cluster, drilling and notching the center cavity to match the left and right cavity openings, then sourced a bulb holder and wiring that matched the left and right, I ran the positive for this newly installed center bulb to the connector, adding the pin to the empty side of the connector, so that it uses the unassigned pin on the source side connector, then attached the other end of the bulbs wiring to ground, I then took apart my squib ring and swapped the right hand stalk (indicator/lights on the Japanese GT86) (with one from I think was an Australian vehicle in the end?) Which connected directly up to the stalks normal connector, which added a final switch state for that stalk (sprung so you twist against spring pressure and release to toggle it) and without any other modifications beyond the new stalk and adding the center light to the existing connector + ground, using the rear fog switch does as it is supposed to, and when your headlights are on, using it enables the rear fog light indicator on the dash, and turns on the center rear fog light.
I would imagine the same could be done with your vehicle without any additional steps, the key part is finding a indicator stalk for the correct side that has the rear fog light setting on it.