Which wires give constant, ignition and ground on a 2013 Buick LaCrosse?
On a 2013 Buick LaCrosse, take constant power from the Red/White wire at the ignition plug at the key barrel, pin 2, ignition from the Pink wire at the ignition plug at the key barrel, pin 1, 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 plug at the key barrelSystem voltage:12VIgnition type:Key start (this page)
Where do I get constant, ignition and ground on a 2013 Buick LaCrosse?
Constant and ignition are on one plug at the key barrel.
Option 1 All the power
Ignition plug
Small plug at the key barrel. Pin 5 is empty.
Constant
Red/White
Ignition plug at the key barrel, pin 212V battery feed. Fuse it close to the tap.
Ignition
Pink
Ignition plug at the key barrel, pin 1Hot with the key in run.
Accessory
Not found
Not in the guideNo accessory wire is listed.
Ground
Body ground
Bare metal under the dashNo ground wire in the guide. Never the battery negative post.
Pin 4 is a data wire and is also Pink, same as ignition. Go by pin. Never tap pin 4.
Option 2 Backup
Fuse tap
For accessory power.
Accessory
Fuse tap
Interior fuse panelNot in the guide. Find a slot that is hot only in accessory and run.
Use an add-a-fuse.
From Fortin's install guide for the 2011 to 2016 LaCrosse with a flip key (guide 78551).
Where are the turn signal, reverse and light wires on a 2013 Buick LaCrosse 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
Lt.Green
Parking light switchGround when the parking lights are on. Meter it first.
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 2011 to 2016 LaCrosse with a flip key (guide 78551).
Where are the brake, door, speed and CAN wires on a 2013 Buick LaCrosse for advanced 360 multicam and video telematics installs?
Circuit
Wire color
Location and what it does
CAN dataDataNot yet checked
Lt.Green (single wire CAN)
OBD-II port, pin 1GM single wire CAN. Never cut it or use it for power.
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 2011 to 2016 LaCrosse with a flip key (guide 78551). Wires marked Not found were not in the guide.
Where are the fuse boxes and ground points on a 2013 Buick LaCrosse?
Steering columnIgnition plugConstant and ignition.
Driver dashOBD-II portCAN.
Ground pointsBare body metalNever the battery negative post.
Locations from Fortin's install guide.
Where is the OBD-II port on a 2013 Buick LaCrosse?
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 2013 Buick LaCrosse?
This page2013Buick LaCrosse with a flip key.
Same wiring2011, 2012, 2014, 2015, 2016Fortin uses the same guide for these years.
Older LaCrosse2005 to 2009Different body and guide.
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This page covers the 2013 Buick LaCrosse sedan with a flip key start. Push-button cars use a different guide.
The wire colors come from Fortin's install guide, read wire by wire. Our own team has not yet metered these on a 2013 LaCrosse.
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 2013 Buick LaCrosse wiring
What wire is constant power on a 2013 Buick LaCrosse?
Red/White at the ignition plug at the key barrel, pin 2. 12V battery feed. Meter it before you tap it.
What wire is ignition on a 2013 Buick LaCrosse?
Pink at the ignition plug at the key barrel, pin 1. Hot with the key in run. Meter it before you tap it.
Which years share wiring with the 2013 Buick LaCrosse?
2011, 2012, 2014, 2015, 2016. 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 2013 Buick LaCrosse 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 2013 Buick LaCrosse 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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Your name, right on this page, for everyone who uses it to see. Add your tip and your photos in one box.
