power door lock wiring
Thread Starter
Racer
Joined: Jul 2007
Posts: 348
Likes: 12
From: Ocala, Florida
power door lock wiring
I am new to this forum. I need help with my 1979 vette my door locks didn't work got new actuators and switch pigtails drivers side hooked up fine both locks worked as to the passenger side the wiring color code does not match. The pigtail has 5 wires a black wire I assume Ground, an orange wire I assume hot 12v, a grey wire, a tan wire and a blue wire. the harness has an orange wire I assume hot 12v, a blue wire, and a black or dark grey wire. the 1979 wiring diagram shows the pigtail to have two black wires, a purple wire, a pink wire, and an orange wire. I have tryed different combos but when I try the passenger switch it blows the fuse but the drivers side switch works fine. Thanks for anyones HELP
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Hey NoMoCrap(you picked a good one)
On the plastic part of the NEW pigtails are letters A B C D E -Tell me what color of each wire is, and to which letter it goes.
Also just in case tell me the colors of the harness on the car.
I will tell you exactly where each wire goes.
Also tell me how you wired the drivers side-letters and colors-Just because it works doesnt mean its correct-both sides work through each other and the wiring has to be correct.
On the plastic part of the NEW pigtails are letters A B C D E -Tell me what color of each wire is, and to which letter it goes.
Also just in case tell me the colors of the harness on the car.
I will tell you exactly where each wire goes.
Also tell me how you wired the drivers side-letters and colors-Just because it works doesnt mean its correct-both sides work through each other and the wiring has to be correct.
Le Mans Master
Joined: Sep 2002
Posts: 5,236
Likes: 898
From: Myrtle Beach SC
I am new to this forum. I need help with my 1979 vette my door locks didn't work got new actuators and switch pigtails drivers side hooked up fine both locks worked as to the passenger side the wiring color code does not match. The pigtail has 5 wires a black wire I assume Ground, an orange wire I assume hot 12v, a grey wire, a tan wire and a blue wire. the harness has an orange wire I assume hot 12v, a blue wire, and a black or dark grey wire. the 1979 wiring diagram shows the pigtail to have two black wires, a purple wire, a pink wire, and an orange wire. I have tryed different combos but when I try the passenger switch it blows the fuse but the drivers side switch works fine. Thanks for anyones HELP
The passenger side is wired to work off the driver's side and gets its power from the orange wire that runs to the driver's side. Otherwise, 78 has a gray and tan wire lead from both sides.
Thread Starter
Racer
Joined: Jul 2007
Posts: 348
Likes: 12
From: Ocala, Florida
DWncchs thanks Ok the pass side pigtail A is orange, B is black, C is grey, D is tan, and is blue. The harness has an orange wire, a blue wire and a black or dk grey wire. The drivers side the pigtail has A orange wire, B purple wire, C grey wire, D tan wire, and E pink wire. The harness has an orange wire, apink wire, a tan wire, a grey wire, and a purple wire. I really appreciate your help JAY
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
DWncchs thanks Ok the pass side pigtail A is orange, B is black, C is grey, D is tan, and is blue. The harness has an orange wire, a blue wire and a black or dk grey wire. The drivers side the pigtail has A orange wire, B purple wire, C grey wire, D tan wire, and E pink wire. The harness has an orange wire, apink wire, a tan wire, a grey wire, and a purple wire. I really appreciate your help JAY
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Orange from the harness to A orange on the pigtail
Blue from harness to C gray on the pigtail
Black from harness to D tan on pigtail
Now you have 2 wire left on pigtail B black and E blue-connect these 2 together and ground both to the door frame
Race Director
Joined: Oct 2000
Posts: 11,891
Likes: 3
From: Kansas City, MO ...I'd like to go fishing and catch a fishstick. That'd be convenient. - Mitch Hedberg
Maybe this will help. This was created specifically for my '80, but I don't think the wiring changed colors.
Thread Starter
Racer
Joined: Jul 2007
Posts: 348
Likes: 12
From: Ocala, Florida
Thanks I will try this tommorow and let you know the results. this my first atempt with a vette. I just finished a 1931 ford model a 4dr it was simple compared to the vette. On the model a I rebuilt the #s matching motor, the trans and rear, the entire electrical system. Thanks again JAY
Thread Starter
Racer
Joined: Jul 2007
Posts: 348
Likes: 12
From: Ocala, Florida
Power Door Locks
DWncchs I wired everything as you said drivers side works fine and pass side blows fuse. I put in another fuse and switched switches same result Now what JAY Thanks Again for your help
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
OK where did you go? Your harness colors are confusing-maybe a late 79.Maybe someone did some rewiring.Anyway your going to have to check continuity.Pull the plugs off both switches.On drivers side plug put your probe in B and then probe the pass side plug for continuity should be D-if its C then switch them. (DONT PROBE A thats orange and its hot)
Drivers side B has to be connected to Pass. side D
Drivers side E has to be connected to Pass. side C
Be sure of where the wires go in the new pigtails-its very easy to get that wrong-the wires go in at an angle and can be deceiving
Drivers side B has to be connected to Pass. side D
Drivers side E has to be connected to Pass. side C
Be sure of where the wires go in the new pigtails-its very easy to get that wrong-the wires go in at an angle and can be deceiving
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
OK gotta go -if you dont have a way to check continuity then just switch D and C on the pass. side pigtail but make absolutly certain that B & E are the wires grounded to the door.Check that plug it has 3 holes on the left but only 2 wires coming out on the left and on the right are 2 holes but 3 wires coming out.(also make sure A-orange is hot)Good Luck
Thread Starter
Racer
Joined: Jul 2007
Posts: 348
Likes: 12
From: Ocala, Florida
DWncchs tried the latest cannot get continuity on either. But I think the switch is bad and may be shorting out and blowing fuse. I am ordering a new switch. I will keep you posted. Thanks Again JAY
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
You have to have continuity from drivers side to passenger side or they wont work.Look at the diagram Sixfooter posted.Look at the blue and the black wires?
Thread Starter
Racer
Joined: Jul 2007
Posts: 348
Likes: 12
From: Ocala, Florida
DWncchs My meter had a dead battery. I checked for continuity and found none for the black wire, good for the blue wire, have everything hooked up as your info. The locks work from the drivers side and still blow the fuse from the pass side. Know I think the harness maybe the culprit. Thanks for your HELP this far. JAY