Which wires give constant, ignition and ground on a 2004 Chevrolet S10?
On a 2004 Chevrolet S10, take constant power from the Red wire at the black 18-pin plug on the ignition harness, steering column, pin 1, ignition from the Pink wire at the black 18-pin plug on the ignition harness, steering column, pin 14, 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 harness plugSystem voltage:12VIgnition type:Key start (this page)
Where do I get constant, ignition and ground on a 2004 Chevrolet S10?
Constant, ignition and accessory are on one plug at the ignition harness.
Option 1 All the power
Ignition harness plug
Black 18-pin plug on the steering column.
Constant
Red
Black 18-pin plug on the ignition harness, steering column, pin 112V battery feed.
Ignition
Pink
Black 18-pin plug on the ignition harness, steering column, pin 14Hot with the key in run. Ignition 2 is White on pin 4.
Accessory
Orange
Black 18-pin plug on the ignition harness, steering column, pin 15Accessory.
Ground
Body ground
Bare metal under the dashNo ground wire in the guide. Never the battery negative post.
Starter is Yellow on pin 7. 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 1999 to 2004 S10 with a key and automatic transmission (guide 107331).
Where are the turn signal, reverse and light wires on a 2004 Chevrolet S10 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 lightPositive +Not yet checked
Brown
Dash relay block, next to the dash fuse blockPositive parking light. 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 1999 to 2004 S10 with a key and automatic transmission (guide 107331).
Where are the brake, door, speed and CAN wires on a 2004 Chevrolet S10 for advanced 360 multicam and video telematics installs?
Circuit
Wire color
Location and what it does
CAN dataDataNot yet checked
Purple (Class 2 data)
OBD-II port, pin 2Older GM single-wire data bus. Never cut or splice it.
BrakePositive +Not yet checked
White
Brake pedal switchPositive with the pedal down.
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 1999 to 2004 S10 with a key and automatic transmission (guide 107331). Wires marked Not found were not in the guide.
Where are the fuse boxes and ground points on a 2004 Chevrolet S10?
Ground pointsBare body metalNever the battery negative post.
Locations from Fortin's install guide.
Where is the OBD-II port on a 2004 Chevrolet S10?
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 2004 Chevrolet S10?
This page2004Chevrolet S10.
Same wiring2000, 2001, 2002, 2003Fortin uses the same guide for these years.
Manual trucksNot coveredThis guide is for automatic transmission trucks.
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This page covers the 2004 Chevrolet S10 compact pickup with a key start and automatic transmission.
The wire colors come from Fortin's install guide, read wire by wire. Our own team has not yet metered these on a 2004 S10.
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 2004 Chevrolet S10 wiring
What wire is constant power on a 2004 Chevrolet S10?
Red at the black 18-pin plug on the ignition harness, steering column, pin 1. 12V battery feed. Meter it before you tap it.
What wire is ignition on a 2004 Chevrolet S10?
Pink at the black 18-pin plug on the ignition harness, steering column, pin 14. Hot with the key in run. Meter it before you tap it.
Where is the brake wire on a 2004 Chevrolet S10?
White (positive +) at the brake pedal switch. Positive with the pedal down. Meter it before you tap it.
Which years share wiring with the 2004 Chevrolet S10?
2000, 2001, 2002, 2003. 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 2004 Chevrolet S10 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 2004 Chevrolet S10 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.
