Headlights: under-dash switch
Thread Starter
Advanced
Joined: Dec 2012
Posts: 85
Likes: 0
From: California
Headlights: under-dash switch
1969 roadster 350/300 auto...gonna start troubleshooting my headlights...by reversing the vacuum at the actuators, they rise and close...There is a switch or something under the dash...has vacuum hoses going to a plastic piece with two fittings...this is broken...what's it all about?
Team Owner
Joined: Jun 2000
Posts: 38,923
Likes: 1,482
From: Southbound
Cruise-In II Veteran
Your owner's manual shows it; it's the headlight door override. It allows you to raise and lower the light doors a time or two with the engine off.
The second one does the same thing for the wiper door.
Freebie: the switch between the two over rides allows you to stop the wipers on the windshield for blade changes, adjustments, etc.
The second one does the same thing for the wiper door.
Freebie: the switch between the two over rides allows you to stop the wipers on the windshield for blade changes, adjustments, etc.
Thread Starter
Advanced
Joined: Dec 2012
Posts: 85
Likes: 0
From: California
Is that why my headlights don't work properly
So there is a small plastic block with two fittings, one of them broken, hanging from below the dash. Seems like a good reason for my headlight issue? Or maybe it's for the wiper door. Looks like I will be wanting an owners manual too. Tomorrow I'll try to just couple the two hoses and see what happens as I don't have a new piece yet.
Burning Brakes
Joined: Oct 2001
Posts: 1,241
Likes: 4
From: Okinawa Okinawa
Mario,
Here is a link to a headlight troubleshooting guide. The plastic piece is for the headlights, not the wiper door. After seven years of headlight issues, I used this guide and got my headlight issues fixed. With a vacuum pump, you can test all components in an hour or so.
http://www.corvette-101.com/vacuum.htm
Here is a link to a headlight troubleshooting guide. The plastic piece is for the headlights, not the wiper door. After seven years of headlight issues, I used this guide and got my headlight issues fixed. With a vacuum pump, you can test all components in an hour or so.
http://www.corvette-101.com/vacuum.htm
Cruising
Joined: Dec 2004
Posts: 10
Likes: 0
From: Mechanicsburg PA
Manuals
Bob Lindsey
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,853
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
So there is a small plastic block with two fittings, one of them broken, hanging from below the dash. Seems like a good reason for my headlight issue? Or maybe it's for the wiper door. Looks like I will be wanting an owners manual too. Tomorrow I'll try to just couple the two hoses and see what happens as I don't have a new piece yet.
http://willcoxcorvette.com/product_i...oducts_id=4438
The over-ride is there so that you can maintenance the lamps. If you pull it downward the lamps will stay open.. or if on the one for the wiper door.. it will stay open for service of the wiper arms. If the tit is broken off one of the valves you'll lose vacuum.
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
