C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

help verify starter connections

Thread Tools
 
Search this Thread
 
Old Mar 18, 2017 | 02:37 PM
  #1  
biackbenz's Avatar
biackbenz
Thread Starter
Drifting
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2004
Posts: 1,411
Likes: 126
From: Mequon WI
Default help verify starter connections

I'm not great at reading wire diagrams, even my own. I think I have my '78 starter wire connections correct but would sure appreciate a second opinion. The single wire is supposed to be purple. Mine looks more pink but I think that is just age and exposure. Not visible is the black heavy cable from the battery just behind the two combined red wires connected to the top brass terminal.

In the second picture, I have the black wire, which I think is a ground, connected to the starter mounting bolt. Is this correct?
Attached Images   
Reply
Old Mar 18, 2017 | 02:49 PM
  #2  
KapsSA's Avatar
KapsSA
Safety Car
20 Year Member
Active Streak: 60 Days
Active Streak: 90 Days
Top Answer: 1
 
Joined: Jun 2004
Posts: 4,363
Likes: 221
From: Beecher Illinois
Default

Looks good to me.
But that black ground actually goes around back to the bellhousing bolt closest to the starter.
Reply
Old Mar 18, 2017 | 03:00 PM
  #3  
KapsSA's Avatar
KapsSA
Safety Car
20 Year Member
Active Streak: 60 Days
Active Streak: 90 Days
Top Answer: 1
 
Joined: Jun 2004
Posts: 4,363
Likes: 221
From: Beecher Illinois
Default

Reply
Old Mar 18, 2017 | 04:27 PM
  #4  
biackbenz's Avatar
biackbenz
Thread Starter
Drifting
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2004
Posts: 1,411
Likes: 126
From: Mequon WI
Default

Thanks KapsSA. I didn't think the ground wire belonged on the starter mounting bolt. Changed it to the bell housing like you show.

FWIW you help me out a lot more than you know. I always search under your name for answers first. Sometime, the threads are so old the pictures are no longer available. So I guess you have been helping guys like me for a long time.
Reply
Old Mar 18, 2017 | 08:18 PM
  #5  
7T1vette's Avatar
7T1vette
Team Owner
15 Year Member
Community Builder
Community Influencer
Top Answer: 5
 
Joined: Jan 2006
Posts: 37,637
Likes: 3,114
From: Crossville TN
Default

The large black wire should be the positive 12vdc cable that comes direct from the battery. It should be connected to the top stud on the starter solenoid, along with the red pair (outgoing 12vdc lines). The negative (ground) should be a large wire that runs from the right side frame to one of the right side engine mount bolts (along with the front bracket for the starter).

If you connect the battery with that large black wire connected to a grounding point, you will have ABUNDANT sparks...or maybe melting wire....or fire....
Reply
Old Mar 18, 2017 | 08:29 PM
  #6  
'75's Avatar
'75
Le Mans Master
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Dec 2007
Posts: 6,422
Likes: 591
From: McHenry Illinois
Default

Originally Posted by 7T1vette
The large black wire should be the positive 12vdc cable that comes direct from the battery. It should be connected to the top stud on the starter solenoid, along with the red pair (outgoing 12vdc lines). The negative (ground) should be a large wire that runs from the right side frame to one of the right side engine mount bolts (along with the front bracket for the starter).

If you connect the battery with that large black wire connected to a grounding point, you will have ABUNDANT sparks...or maybe melting wire....or fire....
If you look at the pictures above, you will see that all is well, he's got it covered!
Reply
Old Mar 19, 2017 | 12:04 AM
  #7  
KapsSA's Avatar
KapsSA
Safety Car
20 Year Member
Active Streak: 60 Days
Active Streak: 90 Days
Top Answer: 1
 
Joined: Jun 2004
Posts: 4,363
Likes: 221
From: Beecher Illinois
Default

Originally Posted by biackbenz
FWIW you help me out a lot more than you know. I always search under your name for answers first. Sometime, the threads are so old the pictures are no longer available. So I guess you have been helping guys like me for a long time.
Thanks, glad to help.
If I use a pic in any thread I pretty much make sure I retain the pic in my photobucket.
OLD thread had pics from "village photos", I guess out of business. I lost a bunch of pics I didn't have backed up
Reply
Old Mar 19, 2017 | 12:07 AM
  #8  
KapsSA's Avatar
KapsSA
Safety Car
20 Year Member
Active Streak: 60 Days
Active Streak: 90 Days
Top Answer: 1
 
Joined: Jun 2004
Posts: 4,363
Likes: 221
From: Beecher Illinois
Default

Originally Posted by 7T1vette
The negative (ground) should be a large wire that runs from the right side frame to one of the right side engine mount bolts (along with the front bracket for the starter).
This......
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

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

 Joe Kucinski
story-1

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

 Verdad Gallardo
story-2

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-3

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-4

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-5

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-6

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-7

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-8

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
story-9

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
Old Mar 19, 2017 | 01:40 PM
  #9  
7T1vette's Avatar
7T1vette
Team Owner
15 Year Member
Community Builder
Community Influencer
Top Answer: 5
 
Joined: Jan 2006
Posts: 37,637
Likes: 3,114
From: Crossville TN
Default

Yes. I can see the 90* lug that is on the end of the positive cable under the outgoing power wires. When I looked at it last night, I didn't see the cable itself and concluded that it wasn't attached. Wanted to make sure the OP didn't have a catastrophe!!
Reply
Old Mar 19, 2017 | 03:43 PM
  #10  
biackbenz's Avatar
biackbenz
Thread Starter
Drifting
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2004
Posts: 1,411
Likes: 126
From: Mequon WI
Default

Thanks to all. There are two ground wires in that vicinity. My pictures do not show the large heavy ground from the block to the frame. You have to look real close to see the lug from the battery cable connected behind the red wires.

I will take all the advice I can get! I really hope to connect the battery soon and have nothing happen. Until I turn the key. Then I hope to hear the starter and in a few seconds the engine running. Thanks to you guys I know I have the starter hooked up correctly!
Reply
Old Mar 19, 2017 | 10:18 PM
  #11  
7T1vette's Avatar
7T1vette
Team Owner
15 Year Member
Community Builder
Community Influencer
Top Answer: 5
 
Joined: Jan 2006
Posts: 37,637
Likes: 3,114
From: Crossville TN
Default

For good starting, you MUST have the large ground wire running from the frame to the right motor mount bolt that also holds the front starter bracket. That gets battery (-) directly to the starter housing.
Reply

Get notified of new replies

To help verify starter connections





All times are GMT -4. The time now is 03:01 PM.

story-0
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-1
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
story-2
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-3
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-4
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-5
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-6
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-7
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-8
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-9
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE