Headlight won't go up with switch but will stay up if manually raised from below.

by Brian Abrahams
(Raymond, Ca)

I wnat to find out why my 1973 Vette headlights won't come up when switch is pulled, but will stay up when manually raised from below.Is this a hose issue, actuator or maybe vacuum relay issue. Need help before invest a lot of time and money.

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Dec 30, 2012
C3 Restoration Manual
by: Corvette-web-cental

This book can be very helpful troubleshooting this and many other problems. Corvette 1968-1982 Restoration Guide, 2nd Edition (Motorbooks Workshop) Production spanned 15 years with more than 540,000 examples built, making these the most common of any Corvette body style. Unfortunately, many have fallen into disrepair and are in need of restoration. This book will delve into all of the idiosyncrasies of the C3’s engine, drivetrain, body, chassis, and interior to guide both first time and experienced restorers to a successful conclusion of their project.

* Tips to ensure correct restoration
* Covers every major component
* Decode stampings and part numbers
* Includes accessory codes and production numbers

Dec 13, 2012
Witch's hat seals
by: Mike

If all your hoses are fine, you could have a leak inside the actuators that raise the headlamps. This is a common problem in C3 Corvettes. The seals inside the actuators actually look like witches hats. They sit inside the actuator around the shaft that moves in and out. This shaft connects to the headlamps. You can buy a seal kit which includes the hats and boots for around twenty bucks. You will have to remove the actuators from the vehicle to get access to these parts. Many people who do not know about these seals end up buying new actuators wasting hundreds of dollars.

Oct 22, 2012
Bad vacuum to lights
by: Anonymous

Check the hoses on the back of the switch . If they are on, it may be the switch ,also check your vacuum line coming off the motor ,follow it from the back of the switch to see where it goes .It nether light will raise you have a leak some where.

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