2005 Chevrolet Classic, Security Wiring Diagram
Printed From: the12volt.com
Forum Name: Vehicle Wiring Information & File Requests
Forum Discription: Request Car Alarm, Car Stereo, Cruise Control, Remote Starter, Navigation, Mobile Video, and Other Vehicle Specific Wiring Info, Manuals, Tech Tips
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=146800
Printed Date: May 09, 2025 at 11:16 AM
Topic: 2005 Chevrolet Classic, Security Wiring Diagram
Posted By: marcusjones24
Subject: 2005 Chevrolet Classic, Security Wiring Diagram
Date Posted: April 11, 2021 at 11:30 PM
I'm looking for an wiring diagram for an 2005 Chevy classic. The only diagram i can find are for the Chevy malibu. I'm not looking to remote start, but only car security. Any relays needed with this vehicle?
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Marcus Jones
Replies:
Posted By: marcusjones24
Date Posted: April 11, 2021 at 11:30 PM
Vehicle uses a regular key.
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Marcus Jones
Posted By: mgoetz74
Date Posted: April 15, 2021 at 2:18 PM
12 Volts red (40A) + ignition harness
Second 12 Volts red (30A) + ignition harness
Ground (chassis ground)
Starter yellow + ignition harness
Ignition pink + ignition harness
J1850 violet data OBD-data link connector, black 16 pin plug, pin 2
Power Lock white (close doors to lock with single pulse) - driver kick, door harness
Power Unlock same as power lock -1500 ohms
Lock Motor gray 5 wire driver kick, door harness
Driver Unlock Motor tan 5 wire driver kick, door harness
Passenger Unlock Motor tan 5 wire passenger kick, door harness
Parking Lights brown + passenger kick, harness to rear
Parking Lights - white - BCM below passenger dash
Headlight dk. blue -high curr headlight switch
Left Front Door Trigger lt. green/black - driver kick, door harness
Right Front Door Trigger lt. blue - driver running board, harness under driver seat
Left Rear Door Trigger same as right front door trigger
Right Rear Door Trigger same as right front door trigger
Dome Light white - underdash light
Trunk/Hatch Pin orange/black - trunk light
Trunk/Hatch Release black/white - release switch
Trunk Release Motor black/white + driver kick, harness to rear
Tachometer white ac ignition control module
Fuel Pump gray + driver kick, harness to rear
Horn Trigger black - steering column
looks like you will need a relay for teh lock/unlock since its the same wire with a resistor
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33 years as a installer now just a retired old guy. Favorite thing to install/topic are remote starts/car alarms. Stop using test lights!!!
Posted By: marcusjones24
Date Posted: June 15, 2021 at 9:10 AM
I have an 2005 chevrolet classic. I looked up the wiring diagram and I am trying to locate the horn wire, which the wiring diagram states it is a black (-) wire located in the steering column. I disassembled the cover from the column and looked under the dash but can't find the location of my horn wire. The parking lights wire is said to be a brown(+) wire in the passenger kick panel. There are 6 brown wires in the passenger kick panel. Could someone guide me in the direction to finding the horn and parking lights wires?
Posted By: marcusjones24
Date Posted: June 18, 2021 at 9:11 PM
What kind of relay do I need for the lock/unlock since they both use the same negative wire?
Posted By: mgoetz74
Date Posted: June 19, 2021 at 10:07 AM
If you are not doing a viper you can still use the 451m and hook it up like-
small plug with green blue red-cut off harness and connect green to lock output of alarm blue to unlock output of alarm red to constant
larger wires blue/black with 1500 ohm resistor to cars lock/unlock wire
larger wires green/black to same wire with no resistor added
purple and purple black to ground and white/black brown/black not used
https://www.amazon.com/s?k=451m&ref=nb_sb_noss_1
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33 years as a installer now just a retired old guy. Favorite thing to install/topic are remote starts/car alarms. Stop using test lights!!!
Posted By: marcusjones24
Date Posted: July 02, 2021 at 9:20 PM
The 451m relay was not needed.
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