C3 General General C3 Corvette Discussion not covered in Tech
Sponsored by:
Sponsored by:

Wiring problems

Thread Tools
 
Search this Thread
 
Old Aug 4, 2022 | 11:51 PM
  #1  
adams32racin's Avatar
adams32racin
Thread Starter
4th Gear
 
Joined: Aug 2022
Posts: 4
Likes: 0
Default Wiring problems

I recently picked up a 1974 car from a friend. The car has been sitting for about 11 years. Some of those years it may have been messed with and maybe started some. The car has for sure sat for 5 years with no one messing with it. I put a new battery in it, checked the oil and made sure it had good gas in it. When I tried to start it I had nothing. When I turn the key on there is no power to anything. I do have power at the starter as I can jump the solenoid manually and it will turn over. I have looked at all the wiring and found a few noticeable problems. There is a 12 gauge or so red wire coming off the solenoid and runs about 6 inches and is cut and stripped. There is another red wire the same size right beside it that is also stripped the same way but it is grounded. There is also a yellow wire coming from the starter and a purple wire that comes up and splits off and goes to a couple places. I know if I put power to the purple wire it will also turn the engine over. I have seen a couple diagrams but they are so confusing for me to try to read it doesn’t help me much. Can someone help me figure out how to get power to the key switch?
Reply
Old Aug 5, 2022 | 02:37 PM
  #2  
righthanddrive's Avatar
righthanddrive
Pro
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Dec 2015
Posts: 578
Likes: 107
From: colo
Default

Papawana has wiring diagrams for all C-3s . Search for 68-82 wiring diagrams for anyone. Be very careful hooking wires up , or you'll be getting new fusible links. Use a volt meter to test for power , and potentially grounds.

Good luck, and maybe someone has photos of the actual wiring connections.
Reply
Old Aug 5, 2022 | 05:09 PM
  #3  
kansas123's Avatar
kansas123
Melting Slicks
15 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Sep 2006
Posts: 2,815
Likes: 470
From: Wichita Kansas
Default

Almost sounds like with all those interrupted wires they might have gone to some sort of anti-theft thingamagig that has been removed.
Reply
Old Aug 5, 2022 | 10:27 PM
  #4  
STL Zombie Hunter's Avatar
STL Zombie Hunter
Burning Brakes
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2012
Posts: 823
Likes: 102
From: St Louis
St. Jude Donor '13
Default

At the base of your steering column near the firewall (inside the car), is an ignition switch. This is what gives power to your starter solenoid when you turn the key. "S" Start Wire shown below.
The key tumbler is hooked to a long steel rod that goes down the column to this solenoid.
I had similar problems with my 1972 when I bought it. In fact, the previous owner actually had a hidden toggle switch to start the car..

Limber yourself up because this is a PIA to get to.
The link below is for non Tilt & Telescoping column..

https://www.zip-corvette.com/69-79-w...on-switch.html


Reply
Old Aug 5, 2022 | 10:33 PM
  #5  
STL Zombie Hunter's Avatar
STL Zombie Hunter
Burning Brakes
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2012
Posts: 823
Likes: 102
From: St Louis
St. Jude Donor '13
Default

I found 2 more pics on my phone from when I rewired my entire car this past Winter.

Hope this helps!!

Starter Switch location

Starter wiring diagram
Reply
Old Aug 6, 2022 | 12:57 AM
  #6  
adams32racin's Avatar
adams32racin
Thread Starter
4th Gear
 
Joined: Aug 2022
Posts: 4
Likes: 0
Default

Originally Posted by righthanddrive
Papawana has wiring diagrams for all C-3s . Search for 68-82 wiring diagrams for anyone. Be very careful hooking wires up , or you'll be getting new fusible links. Use a volt meter to test for power , and potentially grounds.

Good luck, and maybe someone has photos of the actual wiring connections.
Thank you. I will look there for a diagram
Reply
Old Aug 6, 2022 | 01:00 AM
  #7  
adams32racin's Avatar
adams32racin
Thread Starter
4th Gear
 
Joined: Aug 2022
Posts: 4
Likes: 0
Default

Originally Posted by STL Zombie Hunter
At the base of your steering column near the firewall (inside the car), is an ignition switch. This is what gives power to your starter solenoid when you turn the key. "S" Start Wire shown below.
The key tumbler is hooked to a long steel rod that goes down the column to this solenoid.
I had similar problems with my 1972 when I bought it. In fact, the previous owner actually had a hidden toggle switch to start the car..

Limber yourself up because this is a PIA to get to.
The link below is for non Tilt & Telescoping column..

https://www.zip-corvette.com/69-79-w...on-switch.html

Thank you. I will look for this tomorrow
Reply
Old Aug 6, 2022 | 08:06 AM
  #8  
Rescue Rogers's Avatar
Rescue Rogers
Is my vette stock?? HAHA
Supporting Lifetime Gold
Veteran: Navy
10 Year Member
Community Builder
Loved
 
Joined: Oct 2015
Posts: 20,216
Likes: 9,354
From: Im not allowed to tell you
2020 C3 of the Year Finalist - Modified
2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
Default

that picture is the solenoid on the starter, the switch he speaks of is in the link. It is a little confusing the way the pics are set up without an identifier or break in the layout
Reply

Get notified of new replies

To Wiring problems

Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo




All times are GMT -4. The time now is 05:32 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE