Which wires give constant, ignition and ground on a 2025 Toyota Tundra?
On a 2025 Toyota Tundra, take constant power from the Blue wire at the body ECU above the driver kick panel, ignition from the Pink wire at the body ECU above the driver kick panel, and ground to clean, bare body metal. Meter every wire first.
Meter every wire before you tap it. Colors change with trim and build date.
OBD-II port:Location not confirmedBest power spot:Body ECU above the driver kick panelSystem voltage:12VIgnition type:Push-button
Power: one place
Constant and ignition are at the body ECU above the driver kick panel. Fortin prints no ground wire, so ground to clean body metal.
Option 1 Constant and ignition
Body ECU
Above the driver kick panel. Fortin shows plugs A, B and C here.
Constant
Blue
Body ECU above the driver kick panelAlways hot, 12V.
Ignition
Pink
Body ECU above the driver kick panelIgnition 1, hot with the truck on.
Ignition 2
Light Green
Body ECU above the driver kick panelSecond ignition feed.
Colors from Fortin. The guide does not print the pin for each wire, so find the color and meter it.
Ground
Body metal
Under the dash.
Ground
Body ground
Body metal under the dashFortin prints no ground wire for this truck. Clean, bare metal only. Never the battery negative post.
Scrape to bare metal and use a star washer.
From Fortin's install guides for the 2022 Tundra with push-to-start, gas and hybrid (Fortin lists them for 2022 to 2026). The gas and hybrid guides print the same colors.
Where are the turn signal, reverse and light wires on a 2025 Toyota Tundra 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 guides for the 2022 Tundra with push-to-start, gas and hybrid (Fortin lists them for 2022 to 2026).
Where are the brake, door, speed and CAN wires on a 2025 Toyota Tundra for advanced 360 multicam and video telematics installs?
Circuit
Wire color
Location and what it does
StarterPositive +Not yet checked
Black
Body ECU above the driver kick panelStarter output. Never tap it for a GPS or camera.
HornNegative -Not yet checked
Red
At the steering columnNegative horn trigger.
Push-button startDataNot yet checked
Gray (1)
Purple (2)
Tan (3)
Body ECU above the driver kick panelStart/stop button signals. Never tap them.
Power liftgateNegative -Not yet checked
Pink
Not statedNegative trigger. Pink is also the ignition 1 and immobilizer color, so go by plug and pin.
BrakeNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
DoorsNot 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.
CAN dataDataNot yet checked
Black (high)
White (low)
Body ECU above the driver kick panelCAN bus. Black is also the starter color here, so go by plug and pin. Never cut or splice the CAN wires.
Source: Fortin's install guides for the 2022 Tundra with push-to-start, gas and hybrid (Fortin lists them for 2022 to 2026). Ground, turn, park, reverse, headlight, dome, brake, door, parking brake and speed wires were not found.
Where are the fuse boxes and ground points on a 2025 Toyota Tundra?
InteriorFuse panelNo fuse position for these years was found in a source. Read the lid label and meter the slot.
Body ECUAbove the driver kick panelPlugs A, B and C, per Fortin.
Ground pointsClean body metalNo ground wire printed. Never the battery negative post.
Locations from Fortin's install guides.
Where is the OBD-II port on a 2025 Toyota Tundra?
OBD II
Diagnostic portOBD-II port: location not confirmedLook under the driver side dash first, and send us a photo if you find it.
Which years share wiring with the 2025 Toyota Tundra?
This page2025Tundra with push-button start, gas or hybrid, new body.
Same wiring2022, 2023, 2024, 2026Fortin lists one guide for the 2022 to 2026 Tundra.
Not this page2021 and olderThe 2022 Tundra is a new body with different wiring.
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This page covers the 2025 Toyota Tundra with push-button start, gas or i-FORCE MAX hybrid.
The wire colors come from Fortin's install guides, read wire by wire. Fortin works this truck mostly over the data bus, so only a few plain wires are printed. Our own team has not yet metered these on a 2025 truck.
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 truck in front of you.
Common questions about 2025 Toyota Tundra wiring
What wire is constant power on a 2025 Toyota Tundra?
Blue at the body ECU above the driver kick panel. Always hot, 12V. Meter it before you tap it.
What wire is ignition on a 2025 Toyota Tundra?
Pink at the body ECU above the driver kick panel. Ignition 1, hot with the truck on. Meter it before you tap it.
Which years share wiring with the 2025 Toyota Tundra?
2022, 2023, 2024, 2026. Fortin lists one guide for the 2022 to 2026 Tundra.
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 Tundra 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.
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Founding contributor spot: openThe first installer to confirm a wire or send photos for the 2025 Toyota Tundra 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 truck, compliments of" you.
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