1george

Hi,
The head lamps on my '72 coupe won't go down after a peroid of gradually getting slower to open and close. I've read some posts on this site about which vaccum lines control the actuators but wondering what progression of steps I need to do to troubleshoot this ?

Many thanks
1george

Easy Mike

Check the relay first.

1george

Will do, many thanks,

1 george

1george

Will do

Many thanks

1george

1george

I just read where the vaccum filter comming off the maifold can get dirty and clogged. I started there and look it off and it was all stopped up. I cleaned it (for now) and put it back on and the lights now go up and down with no issues other than a small leak in the passenger side accuator seal.

scottw

http://www.corvette-101.com/vacuum.htm

Here is what I use for troubleshooting. For future reference.

Glad you found the problem.

0Willcox Corvette

Here is a vid I did on testing the parts..



Here is the original thread.
http://forums.corvetteforum.com/c3-t...68-1982-a.html

And here is a correct chart... Let me know if you need help aside from this.

demoke

RMVette

Can't do better than that, excellent diagram!