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

Starter wiring

Thread Tools
 
Search this Thread
 
Old Feb 23, 2024 | 02:12 PM
  #1  
scondon's Avatar
scondon
Thread Starter
Instructor
10 Year Member
 
Joined: Sep 2012
Posts: 178
Likes: 26
From: Blue ridge Georgia
Default Starter wiring

Hello gentlemen. Need help identifying these wires.. had to replace my starter with a new one. Took the old wires off and put in new starter put wires back on and hooked up battery and low in behold one wire just melted. Can’t for the life of me understand why. They were all on the old starter. But foe some reason it caught fire. Also the wire with the plug in on it I found tucked in the splash shield on the bottom of the car. Can someone please let me know just how many wires are supposed to be on the starter




Reply
Old Feb 23, 2024 | 02:36 PM
  #2  
Bikespace's Avatar
Bikespace
Race Director
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Mar 2017
Posts: 11,946
Likes: 4,506
From: Virginia
Default

Before we help, promise that you have disconnected the battery, and won't reconnect it until you remove that fuel filter and plumb a proper steel line. You are luck that the fire was purely electrical, this time.

...

I'll wait.

...

And tell us what year your car is.
Reply
Old Feb 23, 2024 | 02:59 PM
  #3  
scondon's Avatar
scondon
Thread Starter
Instructor
10 Year Member
 
Joined: Sep 2012
Posts: 178
Likes: 26
From: Blue ridge Georgia
Default

Originally Posted by Bikespace
Before we help, promise that you have disconnected the battery, and won't reconnect it until you remove that fuel filter and plumb a proper steel line. You are luck that the fire was purely electrical, this time.

...

I'll wait.

...

And tell us what year your car is.
my car is a 73 coupe. And yes the battery is disconnected.

I can’t find were it comes into the interior of the car. It looks like it only melted to the fire wall before I could unhook the battery
Reply
Old Feb 23, 2024 | 03:07 PM
  #4  
Bikespace's Avatar
Bikespace
Race Director
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Mar 2017
Posts: 11,946
Likes: 4,506
From: Virginia
Default

Originally Posted by scondon
my car is a 73 coupe. And yes the battery is disconnected.

I can’t find were it comes into the interior of the car. It looks like it only melted to the fire wall before I could unhook the battery
I was hoping this would be an easy one.

Later cars have a replaceable starter extension harness. Yours does not.

Those wires may lead to the block plug at the back of the fuse panel, and others to the horn relay. Some helpful diagrams are here, though the early diagrams are really difficult to follow. The "fusible link" called out is likely what cooked.

https://wordpress.keystonestatecorve...m/?page_id=118
Reply
Old Feb 23, 2024 | 03:14 PM
  #5  
scondon's Avatar
scondon
Thread Starter
Instructor
10 Year Member
 
Joined: Sep 2012
Posts: 178
Likes: 26
From: Blue ridge Georgia
Default

Originally Posted by Bikespace
I was hoping this would be an easy one.

Later cars have a replaceable starter extension harness. Yours does not.

Those wires may lead to the block plug at the back of the fuse panel, and others to the horn relay. Some helpful diagrams are here, though the early diagrams are really difficult to follow. The "fusible link" called out is likely what cooked.

https://wordpress.keystonestatecorve...m/?page_id=118

thanks
Reply
Old Feb 23, 2024 | 03:25 PM
  #6  
Bikespace's Avatar
Bikespace
Race Director
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Mar 2017
Posts: 11,946
Likes: 4,506
From: Virginia
Default

Looking again, I'm not sure those are the fusible links that cooked. I'm also not sure those are stock wires. On a 51 year old car, anything is possible.

Hopefully someone chimes in.

In the meantime, look for other example harnesses, including the replacements available from Lectric Limited. That might give you the answers you need.
Reply
Old Feb 23, 2024 | 03:29 PM
  #7  
scondon's Avatar
scondon
Thread Starter
Instructor
10 Year Member
 
Joined: Sep 2012
Posts: 178
Likes: 26
From: Blue ridge Georgia
Default

Originally Posted by Bikespace
Looking again, I'm not sure those are the fusible links that cooked. I'm also not sure those are stock wires. On a 51 year old car, anything is possible.

Hopefully someone chimes in.

In the meantime, look for other example harnesses, including the replacements available from Lectric Limited. That might give you the answers you need.

yup don’t believe they are. I just don’t know why they melted now the cars been running with them all along. I put them back on the new starter the same way they came off the old one. Can’t explain what changed
Reply
Old Feb 23, 2024 | 03:32 PM
  #8  
Greg's Avatar
Greg
Just another Corvette guy
Supporting Lifetime Gold
20 Year Member
 
Joined: Feb 1999
Posts: 8,518
Likes: 3,865
From: Palm Springs, CA.
Default

I have seen this issue numerous times on Corvettes. It's an easy mistake to make. When the starter is pulled there are usually 4 wires involved, but some times 5. A ground circuit wire is also down there. It should be fit to one of the lower bell housing bolts, but sometimes I've seen them attached to one of the starter mount bolts. When the old stater is removed and the new one installed, the mechanic is looking at 5 hanging wires which all look like they should attach to the solenoid. The eyelet for the ground wire is designed to take a 3/8" bell housing bolt, which also fits perfectly on the main solenoid battery cable stud, causing an immediate dead short when the battery is reconnected. It was not designed with this potential error in mind.

Purple wire: S terminal to clutch safety switch or neutral safety switch.
Yellow wire: R terminal to coil
Red wire: Main stud to horn relay junction (this wire has the fusible link).
Black cable: Main stud to battery positive.
Extra black wire: Bell housing ground.

I'm sure most of that damage will be isolated to the engine compartment, perhaps as far as the fuse box outer connector. It's not that difficult to replace. You'll be back in the game today.

Cheers, Greg

Reply
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
Old Feb 23, 2024 | 03:38 PM
  #9  
scondon's Avatar
scondon
Thread Starter
Instructor
10 Year Member
 
Joined: Sep 2012
Posts: 178
Likes: 26
From: Blue ridge Georgia
Default

Originally Posted by Greg
I have seen this issue numerous times on Corvettes. It's an easy mistake to make. When the starter is pulled there are usually 4 wires involved, but some times 5. A ground circuit wire is also down there. It should be fit to one of the lower bell housing bolts, but sometimes I've seen them attached to one of the starter mount bolts. When the old stater is removed and the new one installed, the mechanic is looking at 5 hanging wires which all look like they should attach to the solenoid. The eyelet for the ground wire is designed to take a 3/8" bell housing bolt, which also fits perfectly on the main solenoid battery cable stud, causing an immediate dead short when the battery is reconnected. It was not designed with this potential error in mind.

Purple wire: S terminal to clutch safety switch or neutral safety switch.
Yellow wire: R terminal to coil
Red wire: Main stud to horn relay junction (this wire has the fusible link).
Black cable: Main stud to battery positive.
Extra black wire: Bell housing ground.

I'm sure most of that damage will be isolated to the engine compartment, perhaps as far as the fuse box outer connector. It's not that difficult to replace. You'll be back in the game today.

Cheers, Greg

I’ll go look and see.

Any thoughts on the plug end wire that was just hanging down there
Reply
Old Feb 23, 2024 | 03:41 PM
  #10  
Greg's Avatar
Greg
Just another Corvette guy
Supporting Lifetime Gold
20 Year Member
 
Joined: Feb 1999
Posts: 8,518
Likes: 3,865
From: Palm Springs, CA.
Default

What color are the wires in that connector?
Reply
Old Feb 23, 2024 | 04:10 PM
  #11  
scondon's Avatar
scondon
Thread Starter
Instructor
10 Year Member
 
Joined: Sep 2012
Posts: 178
Likes: 26
From: Blue ridge Georgia
Default

Ok next question is are these two red wires maybe the same but one got terminated and they ran a new one. And yes the ground wire is attached to the bell housing

Reply
Old Feb 23, 2024 | 04:13 PM
  #12  
Greg's Avatar
Greg
Just another Corvette guy
Supporting Lifetime Gold
20 Year Member
 
Joined: Feb 1999
Posts: 8,518
Likes: 3,865
From: Palm Springs, CA.
Default

Should only be one red wire there. Check both of those for continuity to ground.
Reply
Old Feb 23, 2024 | 04:22 PM
  #13  
scondon's Avatar
scondon
Thread Starter
Instructor
10 Year Member
 
Joined: Sep 2012
Posts: 178
Likes: 26
From: Blue ridge Georgia
Default

Originally Posted by Greg
Should only be one red wire there. Check both of those for continuity to ground.

only the one with the connector on goes to the starter the one that’s cut off is just in the harness with the other wires that go down there. It doesn’t connect to anything.
Reply
Old Feb 24, 2024 | 09:23 AM
  #14  
pspicci's Avatar
pspicci
Burning Brakes
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Apr 2020
Posts: 789
Likes: 419
From: Western NY
Default

You may want to consider just replacing the engine harness. Some of your wires there look pretty beat up. Will cost a little but that harness is not difficult to replace.
Pat
Reply
Old Feb 24, 2024 | 08:02 PM
  #15  
scondon's Avatar
scondon
Thread Starter
Instructor
10 Year Member
 
Joined: Sep 2012
Posts: 178
Likes: 26
From: Blue ridge Georgia
Default

Originally Posted by Greg
Should only be one red wire there. Check both of those for continuity to ground.
everything I am seeing is that the Main wire to the starter is the positive cable from the battery then the wire from coil and then the ignition wire. My main cable to the starter is black which to me means the negative cable. Unless the previous owner ran a black cable from the positive terminal of battery. It’s red on the inside of battery tray but I really haven’t traced from battery to starter. Doing that in the morning
Reply
Old Feb 25, 2024 | 01:52 AM
  #16  
4-vettes's Avatar
4-vettes
Race Director
15 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Nov 2006
Posts: 13,225
Likes: 7,823
From: Sunshine Coast, Queensland, Australia
2025 C3 of the Year Finalist - Modified
2024 C3 of the Year Finalist- Modified
2022 C3 of the Year Finalist - Modified
Cruise-In VIII Veteran
Default

You can really save the time. The negative cable is about a foot long. No way it can reach the starter.
Battery cables are almost always black. Sometimes with a red end on them. A previous owner didn't change that. The factory built it this way.
the ONLY Battery cable that can possibly reach your starter has to be the positive cable. And it is always black. (With a red cap on the battery end)
Reply
Old Feb 25, 2024 | 06:11 AM
  #17  
scondon's Avatar
scondon
Thread Starter
Instructor
10 Year Member
 
Joined: Sep 2012
Posts: 178
Likes: 26
From: Blue ridge Georgia
Default

Originally Posted by pspicci
You may want to consider just replacing the engine harness. Some of your wires there look pretty beat up. Will cost a little but that harness is not difficult to replace.
Pat

many on here can relate to this statement. Well honey looks like I will need to buy a new engine wire harness for the car. (Wife) how much does that cost. Only 700 dollars but it-will make the car run better. (Wife) ABSOLUTELY NOT YOUR NOT SPENDING ANY MORE MONEY ON THAT CAR. YOU WILL JUST HAVE TO MAKE Do WITH WHAT YOU HAVE “AND THATS FINAL YOU UNDERSTAND ME” LOL.

So replacing the wiring harness is probably not going to happen.

oh and buy they way. I already have a 75 coupe in full restoration mode frame off in the other garage. Which has taken my life’s saving down to zero. And she ain’t happy with that one either. LOL.

Reply

Get notified of new replies

To Starter wiring

Old Feb 25, 2024 | 06:33 AM
  #18  
4-vettes's Avatar
4-vettes
Race Director
15 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Nov 2006
Posts: 13,225
Likes: 7,823
From: Sunshine Coast, Queensland, Australia
2025 C3 of the Year Finalist - Modified
2024 C3 of the Year Finalist- Modified
2022 C3 of the Year Finalist - Modified
Cruise-In VIII Veteran
Default

Probably has something to do with the fact I have 4 ex wife's.
Reply
Old Feb 25, 2024 | 07:02 AM
  #19  
scondon's Avatar
scondon
Thread Starter
Instructor
10 Year Member
 
Joined: Sep 2012
Posts: 178
Likes: 26
From: Blue ridge Georgia
Default

Originally Posted by 4-vettes
Probably has something to do with the fact I have 4 ex wife's.

I know the feeling. At one point I had 6. 1973 coupe. 3- 1975 coupe’s. 1999 coupe. 2005 convertible

but all gone but the one 1975 and 1973 coupe and just got a 2014 coupe
Reply
Old Feb 25, 2024 | 02:50 PM
  #20  
DWAVette's Avatar
DWAVette
Drifting
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: May 2020
Posts: 1,663
Likes: 702
From: Baton Rouge, Louisiana, metro area
Default

Originally Posted by scondon
I know the feeling. At one point I had 6. 1973 coupe. 3- 1975 coupe’s. 1999 coupe. 2005 convertible

but all gone but the one 1975 and 1973 coupe and just got a 2014 coupe
I had 3: 82, 91, 99. Got tired of working on them all the time. Now have one 75 —- that I work on all the time!!!
Reply



All times are GMT -4. The time now is 11:08 PM.

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