KJ Mirrors DO autodim, I have them. You would want the GTS Power Heated Mirrors (55155843AG and 55155842AG). They are also Autodimming. If you look at the pinout, you will see that in the US, the pins are for the autodimming feature in place of the power-fold option that is available on export KJs. This is also only available to Limiteds, however, as they have the 8 pin wiring harness in the door necessary to run it all. Pin 5 feeds the mirrors heating element whenever you put on your defogger. And then the rest of the pins are just the standard power mirror functions. A Sport can easily ass this harness as all it requires is a power source to operate. You just run power to the door panel control switch, and from there run the wires for controlling the mirror movement. The other wires are heating and the Auto Dim +/- as we have now established and know where to run them.
As far as that Autodim +/- in the side view mirrors, though, I knew the wire was also found down there, but I still didn't know what it was and why I even needed to bother with it...still don't. Since the side view mirrors do not have a reverse sensor, they will always be in autodim, regardless of whether you put it into reverse. But apparently from what you are saying, the +/- is a signal handled by the interior rear view mirror as the command unit, which is sent to the side view mirrors telling them to turn off as well when it senses the car is in reverse? Seems logical and illogical all at once simply because I don't see why the side view mirrors would not be set up to sense that themselves, but yeah, there should be some sort of communication between them.
I will just go ahead and trace the +/- coming from the driver's door once it enters the cabin and see if I can find the tree where it splits to go to the passenger door as well, if there is one. If they split like I think, I will just splice it into the wire going to the driver's door since I already have wiring running down there and it will send the signal across the whole line including passenger.
I will post pictures, next time I get a chance, of the reverse sensor wiring. Basically, open your kick plate and look for a gray and white wire. It is the reverse light wire. When it gets power from you shifting into reverse, it will power that wire once you splice and the mirror will respond by killing the dim.
1
P71 20TN/DG (LHD)
LEFT MIRROR UP DRIVER
1
P72 20TN/GY (RHD)
RIGHT MIRROR UP DRIVER
2
P76 20TN/LB
MIRROR COMMON DRIVER
3
P75 20TN/LG (LHD)
LEFT MIRROR LEFT DRIVER
3
P74 20TN/OR (RHD)
RIGHT MIRROR LEFT DRIVER
4
P112 20TN/OR (EXCEPT POWER FOLD)
AUTO DAY/NIGHT MIRROR (+)
5
C16 20DB/GY
FUSED REAR WINDOW DEFOGGER RELAY OUTPUT
6
Z999 20BK
GROUND
7
P99 20LG/LB (POWER FOLD)
FOLDING MIRROR FEED
8
P114 20TN/WT (EXCEPT POWER FOLD)
AUTO DAY/NIGHT MIRROR (-)
8
P110 20LG/WT (POWER FOLD)
FOLDING MIRROR RETURN
