Ah, I see. I misread your post.All I’m sorry but I’m not seeing them. I see the below but that is not what I need. I found and ordered harnesses from AliExpress and will try them.
PT974-89251 4RUN Wirehar Auxiliary Hi PT974-89252 4RUN Wirehar Auxiliary Lo
This is what ordered:
The big tell is under the hood by the drivers side headlight there should be a plug to nowhere with a cap on it, and in your drivers side fuse box there will be fuses and relays in there for the AUX wiring. But usually if it has all that it’s got AUX 1-4 already inside too. Also those bottom ones are for the powered steps/TRD Pro light bar and then the rear scene light on/door/off. In this pic here those blank spots next to the blue relays is where the AUX switch relays areAny updates? I checked my OPR, and it also has the switch wires—plus, there's another one located a little further down.
Bumping this because it provides 100% of the information needed to complete the work.Most def!!
Adding this for future search index. This seems to be an accurate wiring diagram for the factory switch, based on what I found with my meter.
Basically,
Wire 1: Receives 12V when the headlights are on to backlight the switch.
Wire 2: Receives 12V anytime the ignition is on.
Wire 3: Ground for the backlight
Wire 4: Switched circuit (goes to relay or control circuit)
Wire 5: Ground for the light that illuminates when the circuit is active.
(Wire colors below won't necessarily be the same as your dash harness.
Does that mean you can hook lights directly to the extra harness that came with the 4Runner and just plug it in and the lights would be powered and work?Last one I can find for now:
Please let me know how this goes! I bought a 2025 4Runner TRD ORP Hybrid in December and have been trying to figure out how to wire up the blank aux switches. My vehicle had a minor paint defect that the dealer had to remedy, and as a gesture of good will they asked if I wanted to do a few things, and I asked about wiring up the aux switches. They said that since it wasn't optioned from the factory, it was "impossible" because it uses a different harness and they'd have to tear down the whole dash to do it. Ended up getting all 3 factory skid plates installed instead...But I still want to do the aux switches if I can! My aux panel looks like the attached image.Bumping this because it provides 100% of the information needed to complete the work.
We actually started talking about this at TEQSPORT this morning, so maybe this will become an official project for us.
If someone wants to get ahead of me and try this, here is exactly what I plan on trying:
What you'll need:
1x 4-Conductor Wire - Amazon Link
1x Stinger SwitchHUB - Direct Link (Any solid-state relay module will work as long as it can be ground switched)
4x Vampire Splices - Amazon Link (You don't actually NEED these, but they're a lot easier than cutting and crimping/soldering.)
4x Aux Switch - Get OEM, or whatever aftermarket you want.
1 - Using the vampire splices and 4-conductor wire, tap into the circuit ground wire on each pigtail as indicated above.
2 - Pass the bulk wire through the firewall. I recall there being a grommet on the left side firewall that was fairly easy to access. Make a slit if necessary, and seal it when you're done. I like 3M Weatherstip Adhesive, but that's just my personal choice. You can use Permatex Gasket Maker if you want.
3 - You'll need to find a good place to mount the Stinger relay module. I was planning on mounting it to the fuse box cover on the RH side.
4 - Run the wiring (circuit power) to the relay module. If I recall correctly, this is ground switched. Would be worth checking, maybe I'll circle back around to this after validating to make sure I'm right.
5 - You'll need a high-current source for supply power to the relay module. Obviously, the best option is to run a large gauge cable directly from the battery in the back. There is a large 12v supply for the RH fuse box that is easy to access. If you're only running low-current accessories, this may be okay. I have not validated this, but I have seen others do this with basic Amazon pod lights.
6 - Wire you lights and/or accessories to the "output" on the relay module as indicated below.
This is all fairly simple and will just take a bit of time. The hardest part of this is going to be getting power from the battery at the rear to the engine bay.
That would be super helpful!! thank you!!
