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Old 01-02-2012   #1
avijay
 
Join Date: Nov 2011
Location: Glen Allen, VA
Posts: 49
Default High Mount Brake Light, Not Working

The Z failed state inspection today because my high mount brake light would not work but the primary brake lights work fine.

Brake light bulbs are fine but not getting any juice. Fuse box will be checked in the am, but what else to look for? Thx.
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1970 LT-1 - sold
1971 Vert - sold
1972 454 - sold
1996 Grand Sport - sold
1999 C5 - sold
1969 Mustang Mach1 - sold
1991 ZR-1 - sold

2008 Z06 - current
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Old 01-02-2012   #2
Jim Nolan
 
Join Date: Jan 2007
Location: Florida
Posts: 241
Default Re: High Mount Brake Light, Not Working

I would look at the ground for the high light. There is one thing Gordan stresses alot and that is that grind the star washer into the frame.
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Old 01-03-2012   #3
XfireZ51
 
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,711
Default Re: High Mount Brake Light, Not Working

I got mine converted to LED by =Jeff=
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Old 01-03-2012   #4
Shrek
 
Join Date: Sep 2010
Location: Currituck, NC
Posts: 246
Default Re: High Mount Brake Light, Not Working

Had the same exact problem last inspection! Bumper lights worked, hi mount did not! Easy fix!!
Switch on the brake pedal has two seperate contacts inside.
I removed it (push out with your thumb), disassembled it, cleaned it (WD-40), reassembled it, and presto magico, it works now. I plugged it into the harness and tested it with my thumb before I reinstalled it.
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Old 01-03-2012   #5
Mystic ZR-1
 
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Join Date: Jan 2010
Location: Mystic CT
Posts: 2,639
Default Re: High Mount Brake Light, Not Working

count on it being the switch at the brake pedal...
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Old 01-03-2012   #6
STEWVETTE
 
Join Date: Aug 2011
Location: NOR-CAL
Posts: 19
Default Re: High Mount Brake Light, Not Working

Brake light switch, just fixed mine contacts become corroded.
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Old 01-03-2012   #7
avijay
 
Join Date: Nov 2011
Location: Glen Allen, VA
Posts: 49
Default Re: High Mount Brake Light, Not Working

Quote:
Originally Posted by STEWVETTE View Post
Brake light switch, just fixed mine contacts become corroded.

What's the best way to access the switch and where did you buy the replacement part. Thx.
__________________
1970 LT-1 - sold
1971 Vert - sold
1972 454 - sold
1996 Grand Sport - sold
1999 C5 - sold
1969 Mustang Mach1 - sold
1991 ZR-1 - sold

2008 Z06 - current
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Old 01-03-2012   #8
STEWVETTE
 
Join Date: Aug 2011
Location: NOR-CAL
Posts: 19
Default Re: High Mount Brake Light, Not Working

The switch is located on the brake pedal. Remove lower dash panel then remove switch from brake pedal. If you take the switch apart and you will be able to see how the switch works. Take light sand paper like 320gr and lightly sand the contacts. Then reinstall switch.
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Old 01-03-2012   #9
avijay
 
Join Date: Nov 2011
Location: Glen Allen, VA
Posts: 49
Default Re: High Mount Brake Light, Not Working

OK, so I've taken the panel off and located the two brake light switches, based off of depressing either one I've figured out that the bigger of the two belong to the High Mount Brake Light.

1. is that correct?
2. how in the hell do I take it out and replace? Is it just a simple unscrew of the whole mechanism?

Here are pics I took and keep in mind I took these laying on my back looking up.





__________________
1970 LT-1 - sold
1971 Vert - sold
1972 454 - sold
1996 Grand Sport - sold
1999 C5 - sold
1969 Mustang Mach1 - sold
1991 ZR-1 - sold

2008 Z06 - current
avijay is offline   Reply With Quote
Old 01-03-2012   #10
Shrek
 
Join Date: Sep 2010
Location: Currituck, NC
Posts: 246
Default Re: High Mount Brake Light, Not Working

Shove it out with your thumb! Reinstall it further in than it is now and it's self adjusting when apply pressure on the pedal for the first time.

***EDIT*** OOPS! typed that wrong for reinstall. Shove it back in with pedal slightly depressed, then when you release the pedal it will self adjust the depth. Or you can shove it in against the pedal bracket, but make sure the plunger on the switch is fully depressed. The pedal bracket holds the contacts open, then when you depress the pedal, the plunger extends outward and makes contact inside the switch. Hope that makes more sense

Last edited by Shrek; 01-03-2012 at 08:28 PM.
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