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Topic: third brake light

in Forum: C4 General Discussion

third brake light

Posted: 12/17/12 11:35am Message 1 of 6
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galion, OH - USA
Joined: 5/31/2012
Posts: 413
Vette(s): 1984 base coupe 17,000 miles all original. very low production number.red on red 3853. pro num.
I saw a 84 vette on e-bay for sale today, it had a third brake light. does anyone know if an 84 vette had one of these from the factory? as far as i know they didn't have one.  i e-mailed the seller about this, his reply was it came from the factory that way. i find this very interesting. 


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Re: third brake light

Posted: 12/17/12 12:29pm Message 2 of 6
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Kearns, UT - USA
Joined: 4/6/2012
Posts: 86
Vette(s): 1990, L98, 6 Speed Manual, Brilliant red metallic
A Center High Mounted Signal Light (CHMSL) – a third center brake light – was added in 1986 to comply with safety regulations.

http://en.wikipedia.org/wiki/Chevrolet_Corvette

I'd have to wonder if that back glass and setup was from a different Corvette 1986 or newer...  has the car been in an undisclosed accident?



Re: third brake light

Posted: 12/17/12 9:11pm Message 3 of 6
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Duncanville, TX - USA
Joined: 3/18/2009
Posts: 2246
Vette(s): 1985 Coupe-L98/Auto,Bright Red/Carmine. 1974 Coupe-L48/4speed, Medium Red Metallic/Black Deluxe.
'86 and up only. The hatch glass is different, so in order to add the CHMSL, you would have to change the glass. If the guy insists it came from the factory like that, he's mistaken...he was prolly told that by whomever he bought the car from.
Some owners HAVE changed the hatch so they could have the CHMSL....I had a friend in our local club that did it on his '85. 


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Re: third brake light

Posted: 12/20/12 12:04pm Message 4 of 6
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galion, OH - USA
Joined: 5/31/2012
Posts: 413
Vette(s): 1984 base coupe 17,000 miles all original. very low production number.red on red 3853. pro num.
thanks for the information. 


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Re: third brake light

Posted: 12/21/12 8:42am Message 5 of 6
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Adams' Apple said: '86 and up only. The hatch glass is different, so in order to add the CHMSL, you would have to change the glass.
Accurately, it's 86 to 90 coupes, then 91-95 ZR-1 only.  The 84-85 is the same as 91-up non-ZR-1.

I never knew the glass was different for the CHMSL. My parts fiche reflects this though. Interestingly enough, the glass used with CHMSL was listed as discontinued as of Nov 01, the date of my fiche. The glass used in non-CHMSL was still available.




Re: third brake light

Posted: 12/21/12 8:56pm Message 6 of 6
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Duncanville, TX - USA
Joined: 3/18/2009
Posts: 2246
Vette(s): 1985 Coupe-L98/Auto,Bright Red/Carmine. 1974 Coupe-L48/4speed, Medium Red Metallic/Black Deluxe.
The glass has added holes in it to accommodate the studs to mount the light. Other than that, the glass is the same, afaik.


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"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"

in Forum: C4 General Discussion


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