Which wires give constant, ignition and ground on a 2025 Toyota Corolla Hatchback?
On a 2025 Toyota Corolla Hatchback, take constant power from the Brown wire at the white 30-pin plug "A" on the ECU behind the glove box, pin 6, ignition from the Yellow wire at the white 30-pin plug "B" on the ECU behind the glove box, pin 24, and ground to the White/Black wire at the white 30-pin plug "A" on the ECU behind the glove box. Meter every wire first.
Meter every wire before you tap it. Colors change with trim and build date.
OBD-II port:Behind the glove boxBest power spot:ECU plugs A and BSystem voltage:12VIgnition type:Push-to-start (this page)
Where do I get constant, ignition and ground on a 2025 Toyota Corolla Hatchback?
Constant, ignition and ground are on two ECU plugs behind the glove box.
Option 1 All the power
ECU plugs
Two white 30-pin plugs behind the glove box.
Constant
Brown
White 30-pin plug "A" on the ECU behind the glove box, pin 612V battery feed. Fortin adds a fuse.
Ignition
Yellow
White 30-pin plug "B" on the ECU behind the glove box, pin 24Ignition 1, hot with the car on.
Accessory
Red
White 30-pin plug "B" on the ECU behind the glove box, pin 11Ignition 2. CAN high is also Red, on plug A. Go by plug and pin.
Ground
White/Black
White 30-pin plug "A" on the ECU behind the glove boxGround.
Starter is Lt.Green on pin 10 of plug B. The start/stop wires are Purple, Grey and Pink on plug A. Never tap them.
Option 2 Backup
Fuse tap
If you would rather not touch the ECU.
Ignition
Fuse tap
Interior fuse panelBackup: a slot that is dead off and hot on.
Use an add-a-fuse.
From Fortin's install guide for the 2023 and newer Corolla Hatchback with push-to-start (guide 108521).
Where are the turn signal, reverse and light wires on a 2025 Toyota Corolla Hatchback for advanced 360 multicam and video telematics installs?
Circuit
Wire color
Location and what it does
Left turnNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
Right turnNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
Park lightNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
HeadlightNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
ReverseNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
Dome lightNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
Each chip shows the main insulation color with its stripe. Source: Fortin's install guide for the 2023 and newer Corolla Hatchback with push-to-start (guide 108521).
Where are the brake, door, speed and CAN wires on a 2025 Toyota Corolla Hatchback for advanced 360 multicam and video telematics installs?
Circuit
Wire color
Location and what it does
CAN dataDataNot yet checked
Red (high)
White (low)
White 30-pin plug "A" on the ECU behind the glove box, pins 1 and 2Never cut or splice the CAN wires.
DoorsNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
BrakeNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
Parking brakeNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
Vehicle speedNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
Source: Fortin's install guide for the 2023 and newer Corolla Hatchback with push-to-start (guide 108521). Wires marked Not found were not in the guide.
Where are the fuse boxes and ground points on a 2025 Toyota Corolla Hatchback?
Behind the glove boxECU plugsConstant, ignition, ground, CAN.
Interior fuse panelFuse tapBackup ignition.
Ground pointsWhite/Black wire or body metalNever the battery negative post.
Locations from Fortin's install guide.
Where is the OBD-II port on a 2025 Toyota Corolla Hatchback?
OBD II
Diagnostic portOBD-II port: behind the glove boxPlug-in GPS trackers and OBD harnesses connect here. Check the port before you plan the install.
Which years share wiring with the 2025 Toyota Corolla Hatchback?
This page2025Toyota Corolla Hatchback, push-to-start.
Same wiring2023, 2024Fortin uses the same guide for these years.
Help build this pageWant to be famous?Share a wire color, a photo or a tip for this vehicle, and your name goes on this page.
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This page covers the 2025 Toyota Corolla Hatchback with push-to-start.
The wire colors come from Fortin's install guide, read wire by wire. Our own team has not yet metered these on a 2025 Corolla Hatchback.
Written by API Signal, fleet GPS and camera installers for 35+ years across Georgia, South Carolina and North Carolina, installing every major telematics and camera brand. Every wire on this page lists its source.
Test every wire with a meter before you tap it
No wiring information is ever guaranteed. Colors and locations change with trim, options and build date, and the manufacturer can change them in the middle of a model year. We share this as a starting point for installers, and you are responsible for confirming every connection on the vehicle in front of you.
Common questions about 2025 Toyota Corolla Hatchback wiring
What wire is constant power on a 2025 Toyota Corolla Hatchback?
Brown at the white 30-pin plug "A" on the ECU behind the glove box, pin 6. 12V battery feed. Meter it before you tap it.
What wire is ignition on a 2025 Toyota Corolla Hatchback?
Yellow at the white 30-pin plug "B" on the ECU behind the glove box, pin 24. Ignition 1, hot with the car on. Meter it before you tap it.
Which years share wiring with the 2025 Toyota Corolla Hatchback?
2023, 2024. Fortin uses the same guide for these years.
Help build this page
Had the panels off on one of these? Show the next installer what you found.
No one has sent photos for the 2025 Toyota Corolla Hatchback yet, so yours could be the first. Every photo, wire color and tip we use goes on this page with your name on it, and it saves the next installer time under the dash.
1. Snap it
The plugs, tap points, fuse boxes and ground points. Phone photos are fine.
2. Send it
Tap "Add yours" at the top of this page. Your tip and your photos go in the same box.
3. See your name on it
We check every tip, then post it here "Compliments of" you, by name.
Compliments of
The installers who helped build this page.
★
Founding contributor spot: openThe first installer to confirm a wire or send photos for the 2025 Toyota Corolla Hatchback gets their name here, and it stays here.
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Every tip we use gets a creditThe wire you checked is marked "Checked on a vehicle, compliments of" you.
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