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Topic: Head light switching hissing

in Forum: C3 Electrical

Head light switching hissing

Posted: 12/17/07 8:19am Message 1 of 17
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Fresno, TX - USA
Joined: 1/15/2007
Posts: 240
Vette(s): 1980 corvette
I just installed a new head light switch because the dimmer for the dash lights were bad. Now I hear a hissing noise from the switch. what is it? 


  
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Head light switching hissing

Posted: 12/17/07 8:32am Message 2 of 17
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Eastern Oklahoma County, OK - USA
Joined: 1/3/2006
Posts: 1560
Vette(s): 1980 Black L48 T-Tops
Most likely, one of the vacuum lines you placed on the switch got bumped and is not seated properly.  The sound is vacuum from one of the lines.  Are your lights still going up and down at the same rate as before the switch change?

Also, you might have bumped the lockout (pull down knob under steering column) and dislodged the hose from that.

I'd check those two first.



Head light switching hissing

Posted: 12/17/07 8:41am Message 3 of 17
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Fresno, TX - USA
Joined: 1/15/2007
Posts: 240
Vette(s): 1980 corvette
I think it is coming from the switch. light was not working before switch so I am working on them I will check hose


  

Head light switching hissing

Posted: 12/17/07 8:45am Message 4 of 17
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Eastern Oklahoma County, OK - USA
Joined: 1/3/2006
Posts: 1560
Vette(s): 1980 Black L48 T-Tops
Frank;

The easy way to check this would be to pull the hose off the switch and plug it with a screw or wooden dowel, then start the car and see if you still hear the hissing.

Did you buy the switch off ebay or from one of the supply houses?  The reason I ask is that Ecklers, Mid America and the others out there are very good to replace any bad parts, ebay, not so much.

Good luck!



Head light switching hissing

Posted: 12/17/07 8:58am Message 5 of 17
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Fresno, TX - USA
Joined: 1/15/2007
Posts: 240
Vette(s): 1980 corvette
I got it from ebay. When the light are not pulled out there is no hissing. You hear it when you pull the lights switch out. When you push it in it stops


  

Head light switching hissing

Posted: 12/17/07 9:04am Message 6 of 17
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Eastern Oklahoma County, OK - USA
Joined: 1/3/2006
Posts: 1560
Vette(s): 1980 Black L48 T-Tops
It sounds like the switch to me.  If you got it recently, you might contact the seller and let him know. 

Alternatively, if he is not responsive, you can go back thru ebay and report it if it was advertised as new or working.


Head light switching hissing

Posted: 12/17/07 10:45pm Message 7 of 17
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HOWELL, NJ - USA
Joined: 5/18/2004
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Vette(s): 1979, Targa Blue (72 Color), Pace Car rear spoiler, L88 hood, Dark blue factory interior, 525HP 406, HD 700R4, 370 gears,Steeroids, composite rear spring, TT IIs wrapped in T/A Radials.
Either the switch or there's a snake in yer dashboard!!! Big%20smile Try switching the lines....


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Head light switching hissing

Posted: 12/18/07 12:25am Message 8 of 17
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Charleston AFB, SC - USA
Joined: 10/31/2007
Posts: 111
Vette(s): 1979 Cream Beige Coupe w/383 & 700R4
My headlight switch also makes a "leaking air" noise when I have my headlights open and on. I figured it's a vacuum leak in the switch but I haven't got around to tearing my column down and the headlights still work so Ermm


Head light switching hissing

Posted: 12/18/07 6:15am Message 9 of 17
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Duncanville, TX - USA
Joined: 11/8/2003
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Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
I'd make sure all of the vac. limes are connected properly before condemning the switch. There have been reports of several "new" switches that were no good, but I'd still be sure it wasn't a line loose first.
As I always say..."New" don't mean squat!


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Head light switching hissing

Posted: 12/18/07 7:19am Message 10 of 17
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Fresno, TX - USA
Joined: 1/15/2007
Posts: 240
Vette(s): 1980 corvette
you guys are so awsume!  Luke if you were a woman I would kiss you. I swith the lines on the light switch and it stoped and lights work, thanks a lot


  

in Forum: C3 Electrical


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