Which wires give constant, ignition and ground on a 2018 Hyundai Elantra GT?
On a 2018 Hyundai Elantra GT, take constant power from the Green wire at the blue 6-pin ignition plug, steering column, pin 1, ignition from the Pink wire at the blue 6-pin ignition plug, steering column, pin 4, 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:Ignition plugSystem voltage:12VIgnition type:Key start (this page)
Where do I get constant, ignition and ground on a 2018 Hyundai Elantra GT?
Constant, ignition and accessory are all on one plug at the key cylinder.
Option 1 All the power
Ignition plug
Blue 6-pin plug on the key cylinder.
Constant
Green
Blue 6-pin ignition plug, steering column, pin 112V battery feed.
Ignition
Pink
Blue 6-pin ignition plug, steering column, pin 4Hot with the key in run.
Accessory
Black
Blue 6-pin ignition plug, steering column, pin 2Accessory.
Ground
Body ground
Bare metal under the dashNo ground wire in the guide. Never the battery negative post.
Pin 3 is the starter. Never tap it.
Option 2 Backup
Fuse tap
If you would rather not open the column.
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 2018 Elantra GT with a key (guide 69341).
Where are the turn signal, reverse and light wires on a 2018 Hyundai Elantra GT 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 lightDataNot yet checked
Blue
Black 16-pin plug at the steering column, pin 14Multiplex wire, not a simple on/off signal. Do not use it as a sense input.
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 2018 Elantra GT with a key (guide 69341).
Where are the brake, door, speed and CAN wires on a 2018 Hyundai Elantra GT for advanced 360 multicam and video telematics installs?
Circuit
Wire color
Location and what it does
BrakePositive +Not yet checked
Green
Black 79-pin plug at the driver kick panelPositive with the pedal down. Meter it first.
CAN dataDataNot yet checked
White (CAN 1 high)
Black (CAN 1 low)
White 16-pin plug at the rear of the fuse boxCAN 2 is White (high) and Brown (low) on the same plug. Never cut or splice them.
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.
Source: Fortin's install guide for the 2018 Elantra GT with a key (guide 69341). Wires marked Not found were not in the guide.
Where are the fuse boxes and ground points on a 2018 Hyundai Elantra GT?
Ground pointsBare body metalNever the battery negative post.
Locations from Fortin's install guides.
Where is the OBD-II port on a 2018 Hyundai Elantra GT?
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 2018 Hyundai Elantra GT?
This page2018Hyundai Elantra GT with a key.
Same wiring2019, 2020Same colors in both Fortin guides.
SedanElantra sedanDifferent car. Check its own page.
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This page covers the 2018 Hyundai Elantra GT hatchback with a key start.
The wire colors come from Fortin's install guide, read wire by wire. Our own team has not yet metered these on a 2018 Elantra GT.
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 2018 Hyundai Elantra GT wiring
What wire is constant power on a 2018 Hyundai Elantra GT?
Green at the blue 6-pin ignition plug, steering column, pin 1. 12V battery feed. Meter it before you tap it.
What wire is ignition on a 2018 Hyundai Elantra GT?
Pink at the blue 6-pin ignition plug, steering column, pin 4. Hot with the key in run. Meter it before you tap it.
Where is the brake wire on a 2018 Hyundai Elantra GT?
Green (positive +) at the black 79-pin plug at the driver kick panel. Positive with the pedal down. Meter it before you tap it.
Which years share wiring with the 2018 Hyundai Elantra GT?
2019, 2020. Same colors in both Fortin guides.
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 2018 Hyundai Elantra GT 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 2018 Hyundai Elantra GT 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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