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

1978 Tail Light Wire Functions

Thread Tools
 
Search this Thread
 
Old Jan 14, 2013 | 02:56 PM
  #1  
staffgill's Avatar
staffgill
Thread Starter
Advanced
 
Joined: Oct 2012
Posts: 57
Likes: 0
Default 1978 Tail Light Wire Functions

Does anyone know the functions of the three wires for the 1978 Corvette taillight. There are three wires to each outside tail light. One must a ground, another running light, and another direction/stop. I don't have a tester. Any ideas for left and right side?
Reply
Old Jan 14, 2013 | 05:13 PM
  #2  
super-bee_ski's Avatar
super-bee_ski
Instructor
10 Year Member
 
Joined: Jan 2013
Posts: 145
Likes: 1
From: Edwards CA
Default

I would think:
1. Directional
2. Brake
3. Light (running lights)
I will "wring-out" with a meter this weekend...
Reply
Old Jan 14, 2013 | 06:26 PM
  #3  
Peterbuilt's Avatar
Peterbuilt
Le Mans Master
15 Year Member
 
Joined: Aug 2006
Posts: 7,426
Likes: 1,559
From: mount holly NC
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2019 C3 of Year Finalist (appearance mods)
Default Does this help?

Right side:
dark green = dir & stop
black = ground
brown = tail

Left side:
brown = tail
black = ground
yellow = dir & stop

http://www.vetteprojects.com/bmv/mis...tte%201978.pdf
Reply
Old Jan 14, 2013 | 07:19 PM
  #4  
staffgill's Avatar
staffgill
Thread Starter
Advanced
 
Joined: Oct 2012
Posts: 57
Likes: 0
Default

Originally Posted by petes74ttop
Right side:
dark green = dir & stop
black = ground
brown = tail

Left side:
brown = tail
black = ground
yellow = dir & stop

http://www.vetteprojects.com/bmv/mis...tte%201978.pdf
That's it. Thank you!
Reply
Old Jan 15, 2013 | 12:29 PM
  #5  
super-bee_ski's Avatar
super-bee_ski
Instructor
10 Year Member
 
Joined: Jan 2013
Posts: 145
Likes: 1
From: Edwards CA
Default

Thank you for that helpfull post!
Reply

Get notified of new replies

To 1978 Tail Light Wire Functions





All times are GMT -4. The time now is 07:22 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