Headlight Relays
Thread Starter
Heel & Toe
Joined: Oct 2001
Posts: 15
Likes: 0
From: Leesville La
Headlight Relays
Is there any reason to have 2 headlight relays? Why couldn't I just use 1 and tee off the red and grean hoses after they come out of the relay. I guess one might be a little slower than the other. Anybody ever tried this? The darn things are quite expensive!
Race Director
Joined: Feb 1999
Posts: 19,659
Likes: 34
From: Lenoir City Tennessee
Ci 6, 8 & 10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
I would think that there is no reason you can't just run on one vac relay. I have not tried it myself but I have seen several folks on here reply that they are running on just one. Should help eliminate another source of a vaccum leak.
Burning Brakes
Joined: Nov 2002
Posts: 952
Likes: 44
From: NC
Jimmy
I have a 73 vette, it suposed to have two reallys but currently only has one. Only one light comes up at a time right now. I am not sure why this is. It may be because it can only pull so much air through one relay at a time. I am currently putting in two working relays in order to try an get both lights working properly. If i have positive results I will let you know. Good luck
James
I have a 73 vette, it suposed to have two reallys but currently only has one. Only one light comes up at a time right now. I am not sure why this is. It may be because it can only pull so much air through one relay at a time. I am currently putting in two working relays in order to try an get both lights working properly. If i have positive results I will let you know. Good luck
James
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Safety Car
Joined: May 2005
Posts: 4,176
Likes: 7
From: Jennings LA
Pro
Joined: Oct 2002
Posts: 733
Likes: 15
From: Clarksburg NJ
Cool thread. I was just thinking about trying this the other day. In fact, I'll pick up a vacuum-T tomorrow morning.
My ZZ4 doesn't make a ton of vacuum, and after a lot of testing of the actuators, relays, check valve, and replacing the seals and bushings, I found they came up a lot faster after bypassing the reserve tank ! But, they still do not come up at the same time, so I'm going to try going to one relay. Meanwhile, on the stock L48 in the '75 my dad has, they fly open like they're electric. Go figure !
My ZZ4 doesn't make a ton of vacuum, and after a lot of testing of the actuators, relays, check valve, and replacing the seals and bushings, I found they came up a lot faster after bypassing the reserve tank ! But, they still do not come up at the same time, so I'm going to try going to one relay. Meanwhile, on the stock L48 in the '75 my dad has, they fly open like they're electric. Go figure !
Melting Slicks
Joined: Nov 2001
Posts: 2,668
Likes: 43
From: Eastern US XX
Originally Posted by Jimmy Shepherd
Is there any reason to have 2 headlight relays? Why couldn't I just use 1 and tee off the red and grean hoses after they come out of the relay. I guess one might be a little slower than the other. Anybody ever tried this? The darn things are quite expensive!
Burning Brakes
Joined: Aug 2005
Posts: 1,126
Likes: 0
From: Hudson Falls, N.Y. 76 Vette Modified L-48
Originally Posted by MartyW
I have a 76 and the headlights come up one at a time and always have. Not sure if this means I only have one relay but it would seem that way.
Pro
Joined: Aug 2003
Posts: 673
Likes: 0
From: Jackson Ms
My 79 came with two relays and my lights never came up at the same time. I redid mine to one relay and thay work the same as before.
I beleave the delay has more to do with the Headlamp Housing Actuator Link Spring being old and allso the Housing Pivot Bearing needing grease or replacement.
I beleave the delay has more to do with the Headlamp Housing Actuator Link Spring being old and allso the Housing Pivot Bearing needing grease or replacement.
Thread Starter
Heel & Toe
Joined: Oct 2001
Posts: 15
Likes: 0
From: Leesville La
It Works
Originally Posted by Jimmy Shepherd
Is there any reason to have 2 headlight relays? Why couldn't I just use 1 and tee off the red and grean hoses after they come out of the relay. I guess one might be a little slower than the other. Anybody ever tried this? The darn things are quite expensive!
I tried it today and everything works fine. Both lights even come up at the same time!