Installation of USB Type C Charger connection

Sergi · 2026-10-01T02:19:37-0500

Good morning, everyone,

I’m thinking about buying a Type-C charger for my Toyota to install in the center console and also in the rear seat console behind the cooler, and I’m not sure where to connect the red and black wires.

Could someone help me connect the red wire (ACC) and the black wire (GND)?

I see that it comes with a cable that has a fuse...

Thank you very much in advance!

wpage · 2026-10-01T03:26:03-0500

If you have a volt meter. You could tap into any 12volt source, dependent on whether or not you need it on all the time. In which case you may want to run a line back to the battery. Not recommended. Or to live wires while running,,,
The black ground leg could be connected to nearly any metal frame element, or to another ground wire.
Use the search feature to look for wire schematic details on your specific locations based on your items wire tail lengths and how you plan to splice in for contact points.

Sergi · 2026-10-01T03:37:57-0500

wpage said:
If you have a volt meter. You could tap into any 12volt source, dependent on whether or not you need it on all the time. In which case you may want to run a line back to the battery. Not recommended. Or to live wires while running,,,
The black ground leg could be connected to nearly any metal frame element, or to another ground wire.
Use the search feature to look for wire schematic details on your specific locations based on your items wire tail lengths and how you plan to splice in for contact points.

I'd like to connect it only to ACC and not to 12V to prevent the battery from draining completely when the vehicle is turned off.
My question is whether anyone knows if there’s a wire I can tap into or connect to at those two locations where I want to install two of those Type-C chargers, so I don’t have to go all the way to the fuse box—and if I do have to go to the fuse box, does anyone know which fuse I could install the fuse tap on?

DubDub · 2026-10-01T04:00:11-0500

Interesting OEM Discovery Behind the Center Console (2025 LC 1958)

Maybe this will help you

. It will be difficult for NA spec owners to direct you to anything other than generic things like the battery or fuse boxes since there are differences in LC’s across the international market.

joserafaelrivera · 2026-10-01T07:20:28-0500

Thanks, DubDub, for linking my previous thread. I have been spending quite a bit of time looking into the different power sources and connectors behind the LC250 center console, and for this particular installation I think there is an even cleaner solution.

For a USB charger like this, I would use the factory 12V power outlet circuit.

I have this exact Toyota 2-pin power-outlet T-harness and have already confirmed that it fits the LC250 factory connector perfectly. It simply installs inline between the vehicle harness and the original 12V outlet, while giving you an additional 12V and ground branch for the new USB charger.

Factory harness → T-harness → factory 12V outlet
T-harness branch → USB charger

No cutting, no splicing, and no tapping the OEM wiring.

The reason I prefer this approach is that the power-outlet circuit is already intended to supply accessory loads. With a 30W USB-C charger, the 12V-side current can be several amps under full load, so I would rather use the circuit designed for that purpose than simply grab switched power from one of the other available connectors behind the console.

I would still verify the actual input specification of your USB module before choosing the fuse for the new branch, especially if the USB-A and USB-C ports can both deliver high output simultaneously.

I have one of these exact harnesses here and confirmed the fitment on my LC250. Mine came from Japan, although there are generic Toyota versions available as well.

If you post the exact charger link or a photo of the specifications on the back, I can calculate the expected current draw and recommend the proper fuse size.