Which wires give constant, ignition and ground on a 2005 Ford Thunderbird?
On a 2005 Ford Thunderbird, take constant power from the Red wire at the ignition switch harness on the steering column, ignition from the Green/Black wire at the ignition switch harness on the steering column, 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 switch harnessSystem voltage:12VIgnition type:Key start (this page)
Where do I get constant, ignition and ground on a 2005 Ford Thunderbird?
Constant, ignition and accessory are all at the ignition switch harness.
Option 1 All the power
Ignition switch harness
Harness at the key switch on the column.
Constant
Red
Ignition switch harness on the steering column12V battery feed.
Ignition
Green/Black
Ignition switch harness on the steering columnHot with the key in run.
Accessory
Pink/White
Ignition switch harness on the steering columnAccessory. Yellow and Pink/Yellow are two more accessory feeds.
Ground
Body ground
Bare metal under the dashNo ground wire in the guide. Never the battery negative post.
Starter is Grey/Black. Never tap it. The guide gives no pin numbers, so meter each wire.
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 2002 to 2005 Thunderbird with a key (guide 89661).
Where are the turn signal, reverse and light wires on a 2005 Ford Thunderbird 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
White/Green (data)
Headlight switchMultiplex signal, not a plain on and off wire. Do not use it as a trigger.
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 2002 to 2005 Thunderbird with a key (guide 89661).
Where are the brake, door, speed and CAN wires on a 2005 Ford Thunderbird for advanced 360 multicam and video telematics installs?
Circuit
Wire color
Location and what it does
BrakePositive +Not yet checked
Orange/Blue or Orange/Yellow
Brake pedal switchPositive with the pedal down. Meter it first.
CAN dataNot 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.
Source: Fortin's install guide for the 2002 to 2005 Thunderbird with a key (guide 89661). Wires marked Not found were not in the guide.
Where are the fuse boxes and ground points on a 2005 Ford Thunderbird?
Ground pointsBare body metalNever the battery negative post.
Locations from Fortin's install guide.
Where is the OBD-II port on a 2005 Ford Thunderbird?
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 2005 Ford Thunderbird?
This page2005Ford Thunderbird.
Same wiring2002, 2003, 2004Fortin uses the same guide for these years.
Whole run2002 to 2005One Fortin guide covers every year of this Thunderbird.
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Help build this pageWant to be famous?Share a wire color, a photo or a tip for this vehicle, and your name goes on this page.
Add yoursClose▾
This page covers the 2005 Ford Thunderbird convertible 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 2005 Thunderbird.
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 2005 Ford Thunderbird wiring
What wire is constant power on a 2005 Ford Thunderbird?
Red at the ignition switch harness on the steering column. 12V battery feed. Meter it before you tap it.
What wire is ignition on a 2005 Ford Thunderbird?
Green/Black at the ignition switch harness on the steering column. Hot with the key in run. Meter it before you tap it.
Where is the brake wire on a 2005 Ford Thunderbird?
Orange/Blue or Orange/Yellow (positive +) at the brake pedal switch. Positive with the pedal down. Meter it before you tap it.
Which years share wiring with the 2005 Ford Thunderbird?
2002, 2003, 2004. 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 2005 Ford Thunderbird 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 2005 Ford Thunderbird gets their name here, and it stays here.
★
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.
