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

Electrical Question

Thread Tools
 
Search this Thread
 
Old Jan 9, 2011 | 09:16 PM
  #1  
TyCor's Avatar
TyCor
Thread Starter
Instructor
 
Joined: Mar 2008
Posts: 221
Likes: 0
From: Farifax Station VA
Default Electrical Question

I replaced the power antenna this weekend with a non-power regular version. now when I turn the blinkers on, headlights on, or step on the brake the fuel gauge needle slowly moves clockwise until it is pegged off the right hand stop and the blinker lights are fully illuminated.

anyone ever see anything like this -- how is the power antenna tied into these gauges.
Reply
Old Jan 9, 2011 | 09:46 PM
  #2  
wombvette's Avatar
wombvette
Le Mans Master
15 Year Member
 
Joined: Jan 2000
Posts: 8,918
Likes: 27
From: New Hill NC
Default

Originally Posted by TyCor
I replaced the power antenna this weekend with a non-power regular version. now when I turn the blinkers on, headlights on, or step on the brake the fuel gauge needle slowly moves clockwise until it is pegged off the right hand stop and the blinker lights are fully illuminated.

anyone ever see anything like this -- how is the power antenna tied into these gauges.
Sounds like you knocked the ground off the gauge panel.
Reply
Old Jan 10, 2011 | 08:20 AM
  #3  
...Roger...'s Avatar
...Roger...
Race Director
 
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Default

What year ? Was the power antenna factory ? Was all your work confined to the left rear fender of the car or did you get into the dash ?
Reply
Old Jan 10, 2011 | 10:28 AM
  #4  
TyCor's Avatar
TyCor
Thread Starter
Instructor
 
Joined: Mar 2008
Posts: 221
Likes: 0
From: Farifax Station VA
Default

I did not get under the dash. I spliced in two new fittings onto the two pronged alternator, they were brittle and breaking off. as for the power antenna, I cut the two wires connected to the antenna. One was a power supply and the other was the signal wire telling the antenna when to turn on.
Reply
Old Jan 10, 2011 | 11:05 AM
  #5  
...Roger...'s Avatar
...Roger...
Race Director
 
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Default

Usually when the dash blinker lights are involved the front park/turn lights have lost their ground. There is a ground lead at the alternator that effects the front lights, could you have left it off or the wire broke ? I dont really understand the fuel gauge issue although when it comes to missing grounds anything can happen.
Reply
Old Jan 10, 2011 | 11:45 AM
  #6  
78 silver 78's Avatar
78 silver 78
Instructor
 
Joined: Sep 2010
Posts: 229
Likes: 2
From: Grants Pass Oregon
Default

Originally Posted by TyCor
I did not get under the dash. I spliced in two new fittings onto the two pronged alternator, they were brittle and breaking off. as for the power antenna, I cut the two wires connected to the antenna. One was a power supply and the other was the signal wire telling the antenna when to turn on.
Are the two power wires just hanging there ? You should have pulled the wire connection at the antenna relay.
Reply
Old Jan 10, 2011 | 02:27 PM
  #7  
TyCor's Avatar
TyCor
Thread Starter
Instructor
 
Joined: Mar 2008
Posts: 221
Likes: 0
From: Farifax Station VA
Default

antenna relay? where's that?
Reply
Old Jan 10, 2011 | 02:35 PM
  #8  
...Roger...'s Avatar
...Roger...
Race Director
 
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Default

Originally Posted by TyCor
antenna relay? where's that?
Exactly ,thats why I ask what year and was the antenna you removed a factory one !
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!

 Michael S. Palmer
story-1

5 Best & 5 Worst Corvette Daily Drivers

 Joe Kucinski
story-2

The Headlights of Every Corvette Generation Explained

 Joe Kucinski
story-3

5 Best & 5 Most Overrated Corvette Track Packages of All Time!

 Joe Kucinski
story-4

Every 2027 Corvette Engine Explained

 Joe Kucinski
story-5

Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

 Verdad Gallardo
story-6

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-7

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-8

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-9

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
Old Jan 10, 2011 | 03:28 PM
  #9  
78 silver 78's Avatar
78 silver 78
Instructor
 
Joined: Sep 2010
Posts: 229
Likes: 2
From: Grants Pass Oregon
Default

Originally Posted by TyCor
antenna relay? where's that?
[/I]

If your antenna is factory,one wire powers down,the other powers up,the third is ground. On my '78, the relay is under the console behind the E-brake handle.
Reply
Old Jan 10, 2011 | 04:11 PM
  #10  
SIXFOOTER's Avatar
SIXFOOTER
Le Mans Master
Supporting Lifetime Gold
10 Year Member
 
Joined: Jan 2006
Posts: 9,192
Likes: 27
From: Boca Raton Florida
Default

Check the bonding wire that was on the old antenna, the tail light grounds may have been connected to the same ground lug.
Reply
Old Jan 10, 2011 | 07:28 PM
  #11  
speedreed8's Avatar
speedreed8
Melting Slicks
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Oct 2006
Posts: 2,417
Likes: 336
From: Texas
Default

on my 79 the ground wire for the fuel gauge and power antenna case, were on the same grounding screw attached to the frame and i believe the tail lights are grounded on the same screw.

Last edited by speedreed8; Jan 10, 2011 at 07:42 PM.
Reply
Old Jan 10, 2011 | 07:40 PM
  #12  
...Roger...'s Avatar
...Roger...
Race Director
 
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Default

Originally Posted by SIXFOOTER
Check the bonding wire that was on the old antenna, the tail light grounds may have been connected to the same ground lug.
Originally Posted by speedreed8
on my 79 the ground wire for the fuel gauge and power antenna, were on the same grounding screw attached to the frame and i believe the tail lights are grounded on the same screw.
Good call , you guys might have it.
Reply

Get notified of new replies

To Electrical Question





All times are GMT -4. The time now is 05:58 AM.

story-0
2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!

Slideshow: Is the 2027 Chevrolet Silverado 1500 the best Silverado yet?

By Michael S. Palmer | 2026-06-16 08:01:12


VIEW MORE
story-1
5 Best & 5 Worst Corvette Daily Drivers

Slideshow: 5 best and 5 worst Corvette daily drivers

By Joe Kucinski | 2026-06-15 10:32:13


VIEW MORE
story-2
The Headlights of Every Corvette Generation Explained

Slideshow: The headlights of every Corvette generation explained

By Joe Kucinski | 2026-06-15 10:17:14


VIEW MORE
story-3
5 Best & 5 Most Overrated Corvette Track Packages of All Time!

Slideshow: The 5 best and 5 most overrated Corvette track packages ever.

By Joe Kucinski | 2026-06-09 12:46:45


VIEW MORE
story-4
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

By Joe Kucinski | 2026-06-09 12:16:31


VIEW MORE
story-5
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.

By Verdad Gallardo | 2026-06-08 19:53:43


VIEW MORE
story-6
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-7
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-8
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-9
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