C1 & C2 Corvettes General C1 Corvette & C2 Corvette Discussion, Technical Info, Performance Upgrades, Project Builds, Restorations

Headlight Voltage

Thread Tools
 
Search this Thread
 
Old Apr 2, 2019 | 05:18 PM
  #1  
billbonn's Avatar
billbonn
Thread Starter
Intermediate
 
Joined: Dec 2018
Posts: 38
Likes: 2
From: Grass Valley, Ca
Default Headlight Voltage

65 Coupe, 327/300

I just tested voltage on my headlights with engine running and brights on. I'm seeing 12.3 volts at idle at 12.5 at 2500rpm. I am considering relays but do the experts here think it would add much brightness? If so, should I buy plug and play relay harness or just relays and wiring and splice into the headlight harness in the engine bay before the split? Any feedback would be appreciated. Thanks.

Bill B.
Reply
Old Apr 2, 2019 | 05:20 PM
  #2  
Frankie the Fink's Avatar
Frankie the Fink
Team Owner
 
Joined: Aug 2007
Posts: 58,061
Likes: 7,145
Army
Default

Read this article and decide for yourself:
http://www.madelectrical.com/electri...adlights.shtml
Reply
Old Apr 2, 2019 | 05:26 PM
  #3  
billbonn's Avatar
billbonn
Thread Starter
Intermediate
 
Joined: Dec 2018
Posts: 38
Likes: 2
From: Grass Valley, Ca
Default

Originally Posted by Frankie the Fink
Read this article and decide for yourself:
http://www.madelectrical.com/electri...adlights.shtml
I have read that article, Frankie and just reread it before posting my question here. I am thinking relays would help some but not sure how much and that is why I posed the question here. I have read numerous post you have posted on this subject and I value the opinions of folks like you since my electrical experience isn't that vast.
Reply
Old Apr 2, 2019 | 05:35 PM
  #4  
Frankie the Fink's Avatar
Frankie the Fink
Team Owner
 
Joined: Aug 2007
Posts: 58,061
Likes: 7,145
Army
Default

If you read the article IIRC it states that just a small drop in voltage will reduce headlight brightness by double digits percentage.

Relays will help and the lights will not be too bright....I had relays in my 61...
Reply
Old Apr 2, 2019 | 05:37 PM
  #5  
65GGvert's Avatar
65GGvert
Team Owner
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2006
Posts: 22,167
Likes: 4,172
From: Kannapolis NC
Default

What voltage are you reading at the battery with car running?
Reply
Old Apr 2, 2019 | 05:43 PM
  #6  
billbonn's Avatar
billbonn
Thread Starter
Intermediate
 
Joined: Dec 2018
Posts: 38
Likes: 2
From: Grass Valley, Ca
Default

Originally Posted by 65GGvert
What voltage are you reading at the battery with car running?
14.2 volts at idle.
Reply
Old Apr 2, 2019 | 06:05 PM
  #7  
65GGvert's Avatar
65GGvert
Team Owner
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2006
Posts: 22,167
Likes: 4,172
From: Kannapolis NC
Default

Sounds good
Reply

Get notified of new replies

To Headlight Voltage





All times are GMT -4. The time now is 10:22 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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