74 Headlight Switch hissssss!
Thread Starter
Racer
Joined: Dec 2000
Posts: 469
Likes: 0
From: Lake Havasu City Arizona
74 Headlight Switch hissssss!
My son's 74 Coupe has developed a hissing sound at the headlight switch on the dash. Typically, what's involved here? Does the switch need to be replaced or could there be vacumm hoses loose? Do you have to take the dash apart to to work on it?
Any assistance is appreciated.
Mike
Any assistance is appreciated.
Mike
Burning Brakes
Joined: Jul 2000
Posts: 963
Likes: 0
From: melbourne,Australia
Re: 74 Headlight Switch hissssss! (Hava89)
The ends of the vacuum hoses sometimes split/perish and can be tricky to locate....also check the vacuum hoses on the override switch,same thing happens there.......john :chevy
Racer
Joined: Jan 2001
Posts: 334
Likes: 1
From: Averill Park N.Y.
Re: 74 Headlight Switch hissssss! (Hava89)
I had the same hissing sound on mine and the headlight doors did not work. Turned out to be the headlight switch which was new. Replaced the switch and solved the problem. You should be able to change the switch by removing the upper dash pad. :chevy
Thread Starter
Racer
Joined: Dec 2000
Posts: 469
Likes: 0
From: Lake Havasu City Arizona
Re: 74 Headlight Switch hissssss! (Ken74Conv)
jdunne & Ken74Conv ~
Thanks for the info! Looks like I'll start digging into dash. Hope that's all that's required Ken to get to the switch. We'll see how it turns out.
Thanks
Mike :seeya
Thanks for the info! Looks like I'll start digging into dash. Hope that's all that's required Ken to get to the switch. We'll see how it turns out.
Thanks
Mike :seeya
Burning Brakes
Joined: Jul 2000
Posts: 963
Likes: 0
From: melbourne,Australia
Re: 74 Headlight Switch hissssss! (Hava89)
If you are replacing the switch,spend the extra and replace the dip switch at the same time....it isn't very expensive.......the main switch is lots of fun changing......expect it to take a while........john :chevy
Team Owner
Joined: Jun 2000
Posts: 38,923
Likes: 1,481
From: Southbound
Cruise-In II Veteran
Re: 74 Headlight Switch hissssss! (Hava89)
The hiss is a sure sign of a vacuum leak at the switch. Could be either of the two vacuum lines which attach to the switch, or the switch itself.
