Which wires give constant, ignition and ground on a 2014 Toyota Prius?
On a 2014 Toyota Prius, take constant power from the Pin 16 wire at the OBD-II port, pin 16, ignition from the Red wire at the main body ECU, driver side under the dash, white plug, 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:Under the dash, driver sideBest power spot:OBD port and main body ECUSystem voltage:12VIgnition type:Push-button
Where do I get constant, ignition and ground on a 2014 Toyota Prius?
Constant is at OBD-II pin 16 and ignition is at the main body ECU.
Option 1 Constant and ignition
OBD port and dash
Under the dash, driver side.
Constant
Pin 16
OBD-II port, pin 16Fortin uses pin 16 but prints no color for the Prius.
Ignition
Red
Main body ECU, driver side under the dash, white plugHot with the car on.
Ground
Body ground
Bare metal under the dashNever the battery negative post.
Meter before you tap.
Option 2 Backup
Fuse tap
For switched power.
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 2013 to 2015 Prius (guide 33421, Prius row).
Where are the turn signal, reverse and light wires on a 2014 Toyota Prius 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 lightNegative -Not yet checked
Yellow
Main body ECU, driver side under the dash, 30-pin plugGround when the parking lights are on.
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 2013 to 2015 Prius (guide 33421, Prius row).
Where are the brake, door, speed and CAN wires on a 2014 Toyota Prius for advanced 360 multicam and video telematics installs?
Circuit
Wire color
Location and what it does
CAN dataDataNot yet checked
White (high)
Yellow (low)
OBD-II port, pins 6 and 14Never 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 2013 to 2015 Prius (guide 33421, Prius row). Turn, headlight, reverse, dome, door, brake and speed wires were not found.
Where are the fuse boxes and ground points on a 2014 Toyota Prius?
DiagnosticOBD-II portConstant on pin 16.
DashFuse box and main body ECUIgnition and body signals.
Ground pointsBare body metalNever the battery negative post.
Locations from Fortin's install guides.
Where is the OBD-II port on a 2014 Toyota Prius?
OBD II
Diagnostic portOBD-II port: under the dash, driver sidePlug-in GPS trackers and OBD harnesses connect here. Check the port before you plan the install.
Which years share wiring with the 2014 Toyota Prius?
This page2014Toyota Prius.
Same wiring2013, 2015Fortin uses the same guide for these years.
Changes2016New generation with different colors. 2023 and newer are not covered yet.
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This page covers the 2014 Toyota Prius hybrid with push-button start.
The wire colors come from Fortin's install guide, read wire by wire. Our own team has not yet metered these on a 2014 Prius.
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 2014 Toyota Prius wiring
What wire is constant power on a 2014 Toyota Prius?
Pin 16 at the OBD-II port, pin 16. Fortin uses pin 16 but prints no color for the Prius. Meter it before you tap it.
What wire is ignition on a 2014 Toyota Prius?
Red at the main body ECU, driver side under the dash, white plug. Hot with the car on. Meter it before you tap it.
Which years share wiring with the 2014 Toyota Prius?
2013, 2015. 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 2014 Toyota Prius 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 2014 Toyota Prius 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.
Want to be famous?
Your name, right on this page, for everyone who uses it to see. Add your tip and your photos in one box.
