Midsize pickup, gas and hybrid. Push-button start.
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Which wires give constant, ignition and ground on a 2024 Toyota Tacoma?
On a 2024 Toyota Tacoma, take constant power from the Red wire at the certification ECU above the driver kick panel, top white 30-pin plug, pin 6, ignition from the White wire at the certification ECU, bottom white 30-pin plug, pin 24, and ground to the Brown wire at the certification ECU, top white 30-pin plug, pin 29. Meter every wire first.
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.
This page covers the 2024 Toyota Tacoma, the first year of the fourth generation.
This body is push-button start only, gas or hybrid. The colors come from a 2024 sheet. No Toyota wiring diagram was available to us, so every color here is installer-reported. Our own team has not yet metered these on a 2024 truck, and each row says so.
OBD-II portUnder the dash
Best power spotCertification ECU, driver kick
System voltage12V
Ignition typePush-button
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Where do I get constant, ignition and ground on a 2024 Toyota Tacoma?
Take constant, ignition and ground from the same area.
Option 1 Easiest
Certification ECU
Above the driver kick panel. Push-button start only on this body.
Constant
Red
Certification ECU above the driver kick panel, top white 30-pin plug, pin 6Always hot, 7.5A. From a 2024 Tacoma push-start wire sheet on the12volt.
Ignition
White
Certification ECU, bottom white 30-pin plug, pin 24Hot in run. Ignition 2 is Light Green on pin 11.
Ground
Brown
Certification ECU, top white 30-pin plug, pin 29Ground at the same module.
Accessory
Black
Certification ECU, top white 30-pin plug, pin 21Hot in accessory and run.
The starter is Blue on the bottom 30-pin, pin 10. Never tap the starter. The main 80A constant is White on the 1-pin plug at the passenger dash fuse box.
Option 2 Dash cam
Radio plug
Behind the radio, gray 28-pin plug. Handy for a dash cam.
On hybrid trucks the 12V battery moves under the rear seat, and hybrid wiring may differ. Meter first.
Colors from a 2024 Tacoma push-start wire sheet on the12volt. We found no 2025 or 2026 sheet.
What are the turn signal, reverse and light wires on a 2024 Toyota Tacoma?
Circuit
Wire color
Location and what it does
Left turnPositive +Not yet checked
Tan (front)
Tan (rear)
White 63-pin plug (AJ1) at the top of the driver kick, pin 32 front; pin 48 rearFlashes with the left signal. From a 2024 Tacoma push-start wire sheet on the12volt.
Right turnPositive +Not yet checked
Light Blue (front)
Light Blue (rear)
White 63-pin plug (AJ3) at the top of the passenger kick, pin 27 front; pin 18 rearFlashes with the right signal.
Park lightPositive +Not yet checked
Lavender/Green
Passenger dash fuse box, white 43-pin plug (Q28), pin 30Park lamp output. The right front door wire is the same color on pin 5, so go by pin.
HeadlightNegative -Not yet checked
Red
Headlight switch, white 40-pin plug, pin 4Headlight switch output.
ReversePositive +Not yet checked
Blue
White 63-pin plug (AJ3) at the top of the passenger kick, pin 40Hot in reverse.
Dome lightNegative -Not yet checked
Pink
Body ECU on the passenger dash fuse box, bottom black 30-pin, pin 5Dome light output.
Each chip shows the main insulation color with its stripe. Source: a 2024 Tacoma push-start wire sheet on the12volt.
Where are the brake, door, speed and CAN wires on a 2024 Toyota Tacoma?
Circuit
Wire color
Location and what it does
BrakePositive +Not yet checked
Green
Certification ECU, bottom white 30-pin plug, pin 21Hot with the pedal pressed.
DoorsNegative -Not yet checked
Lavender/Purple (driver)
Lavender/Green (passenger)
Lavender/White (left rear)
Lavender/Tan (right rear)
Driver kick yellow 26-pin (J101), pin 24; passenger dash fuse box white 43-pin (Q28), pins 5, 28 and 1Each grounds when its door is open.
Parking brakeNegative -Not yet checked
Purple
White 63-pin plug (AJ1) at the top of the driver kick, pin 44Electric parking brake signal.
HazardNegative -Not yet checked
Light Blue
A/C control, black 10-pin plug, pin 8Hazard switch input.
SeatbeltNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
Vehicle speedAC signalNot yet checked
Light Blue
Certification ECU, bottom white 30-pin plug, pin 13Speed signal.
TachAC signalNot yet checked
Red
Certification ECU, bottom white 30-pin plug, pin 15Engine speed signal.
CAN busDataNot yet checked
Light Green (high)
White (low)
OBD port, pin 6 and pin 14Also Black/White at the Certification ECU top 30-pin (pins 1 and 2) and Gray/White at the Body ECU (pins 2 and 1). Never cut or splice them.
Aux switchesPolarity: meter itNot yet checked
Black (AUX 1, 15A)
Green (AUX 2, 10A)
White (AUX 3, 5A)
Pigtails near the washer filler neck, behind the driver kick panel and under the bedOnly on trucks with the factory aux switches. One owner post gives these colors; another says each pigtail is white, gray and black. Meter them.
Sources: a 2024 Tacoma push-start wire sheet on the12volt and owner posts on 4th gen Tacoma forums (installer-reported). No Toyota wiring diagram was available. Park/neutral and seatbelt were not found.
Which years share wiring with the 2024 Toyota Tacoma?
This page2024The wire sheet behind this page is for a 2024 truck.
Same wiring2025 and 2026One body since 2024. The wire sheet is for a 2024 truck; 2025 and 2026 are carried.
Not this page2023 and olderThe older body. The interior fuse box moved from the driver side to the passenger side in 2024.
Where are the fuse boxes and ground points on a 2024 Toyota Tacoma?
InteriorPassenger side, under the glove boxRemove a panel to reach it. Moved from the driver side in 2024.
Engine bayOne box each sideLimited hybrid trucks add a box under the rear seat, and the hybrid 12V battery is under the rear seat too.
Ground pointsClean body metalNo named ground point found. Use clean, bare body metal, never the battery negative post.
Locations from owner posts on 4th gen Tacoma forums. Our team has not yet checked them on a truck.
Where is the OBD-II port on a 2024 Toyota Tacoma?
OBD II
Diagnostic portOBD-II port: under the dashPlug-in GPS trackers and OBD harnesses connect here. Check the port before you plan the install.
Common questions about 2024 Toyota Tacoma wiring
What wire is constant power on a 2024 Toyota Tacoma?
Red at the certification ECU above the driver kick panel, top white 30-pin plug, pin 6. Always hot, 7.5A. Meter it before you tap it.
What wire is ignition on a 2024 Toyota Tacoma?
White at the certification ECU, bottom white 30-pin plug, pin 24. Hot in run. Meter it before you tap it.
Where is the reverse wire on a 2024 Toyota Tacoma?
Blue (positive +) at the white 63-pin plug (AJ3) at the top of the passenger kick, pin 40. Hot in reverse. Meter it before you tap it.
Where is the brake wire on a 2024 Toyota Tacoma?
Green (positive +) at the certification ECU, bottom white 30-pin plug, pin 21. Hot with the pedal pressed. Meter it before you tap it.
Where is the parking brake wire on a 2024 Toyota Tacoma?
Purple (negative -) at the white 63-pin plug (AJ1) at the top of the driver kick, pin 44. Electric parking brake signal. Meter it before you tap it.
Where is the vehicle speed signal on a 2024 Toyota Tacoma?
Light Blue at the certification ECU, bottom white 30-pin plug, pin 13. Speed signal. Meter it before you tap it.
Which years share wiring with the 2024 Toyota Tacoma?
2025 and 2026. One body since 2024.
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