Center high mounted stop light...

Kinja'd!!! "RazoE" (razoe)
10/08/2015 at 22:03 • Filed to: None

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Center HIGH mounted stop light

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“HIGH” IS IN THE TITLE

how was this allowed?


DISCUSSION (10)


Kinja'd!!! Zipppy, Mazdurp builder, Probeski owner and former ricerboy > RazoE
10/08/2015 at 22:09

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because the ‘regular’ lights are already high?


Kinja'd!!! DrJohannVegas > RazoE
10/08/2015 at 22:12

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S5.1.1.27 (a) Except as provided in paragraph (b) of this section, each passenger car manufactured on or after September 1, 1985, and each multipurpose passenger vehicle, truck, and bus, whose overall width is less than 80 inches, whose GVWR is 10,000 pounds or less, manufactured on or after September 1, 1993, shall be equipped with a high-mounted stop lamp which:

(1) Shall have an effective projected luminous lens area not less than 2903 square mm. (4 1/2 square inches).

(2) Shall meet the visibility requirements specified in S5.3.2(c).

(3) Shall have the minimum photometric values in the amount and location listed in Figure 10.

(4) Need not meet the requirements of paragraphs 3.1.6 Moisture Test, 3.1.7 Dust Test, and 3.1.8 Corrosion Test of SAE Recommended Practice J186a, Supplemental High-Mounted Stop and Rear Turn Signal Lamps, September 1977, if it is mounted inside the vehicle.

(5) Shall provide access for convenient replacement of the bulb without the use of special tools.

(b) Each multipurpose passenger vehicle, truck and bus whose overall width is less than 80 inches, whose GVWR is 10,000 pounds or less, whose vertical centerline, when the vehicle is viewed from the rear, is not located on a fixed body panel but separates one or two movable body sections, such as doors, which lacks sufficient space to install a single high-mounted stop lamp on the centerline above such body sections, and which is manufactured on or after September 1, 1993, shall have two high-mounted stop lamps which:

(1) Are identical in size and shape and have an effective projected luminous lens area not less than 1452 square mm. (2 1/4 square inches) each.

(2) Shall meet the visibility requirements specified in S5.3.2(d).

(3) Together have the minimum photometric values specified in paragraph (a)(3) of this S5.1.1.27.

(4) Shall provide access for convenient replacement of the bulbs without special tools.

And, for good measure S5.3.2

S5.3.2 Except as provided in S5.3.2.1 through S5.3.2.4 and in paragraphs S5.7 and S7, each vehicle must conform to the following requirements:

(a) Each lamp and reflective device must be installed in a location where it complies with all applicable photometric requirements and visibility requirements, with all obstructions ( e.g. , mirrors, snow plows, wrecker booms, backhoes, and winches) installed on the vehicle.

(c) A high mounted stop lamp must have a signal visible to the rear through a horizontal angle from 45 degrees to the left to 45 degrees to the right of the longitudinal axis of the vehicle.

(d) High mounted stop lamps required to comply with S5.1.1.27(b) must together have a signal to the rear as specified in S5.3.2(c).


Kinja'd!!! Ike > Zipppy, Mazdurp builder, Probeski owner and former ricerboy
10/08/2015 at 22:13

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Someone was high, I don't think it's the lights


Kinja'd!!! RazoE > DrJohannVegas
10/08/2015 at 22:18

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(Actually, I did read, but it doesn’t say [or I didn’t understand] where it says it doesn’t have to be high mounted)


Kinja'd!!! Zipppy, Mazdurp builder, Probeski owner and former ricerboy > Ike
10/08/2015 at 22:20

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Probably a bit TOO high.


Kinja'd!!! shop-teacher > RazoE
10/08/2015 at 22:21

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Figures it’s be a dustbuster van.


Kinja'd!!! Ike > Zipppy, Mazdurp builder, Probeski owner and former ricerboy
10/08/2015 at 22:26

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Ceech: hey man what if the high light was low....

Chong: and the low lights were hiiighh man


Kinja'd!!! HFV has no HFV. But somehow has 2 motorcycles > RazoE
10/08/2015 at 23:01

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I don’t see a height specification at all. that’s probably not any lower and a sedan that has the HMSL mounted at the base of the rear windshield/rear of parcel shelf, or on the spoiler.

or this one on this Miata

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Kinja'd!!! DrJohannVegas > RazoE
10/09/2015 at 00:06

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Sorry, I realized after I left the house that I failed to include the necessary Figures. See below:

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Also, the mounting rules are outlined here:

S6.1.4 Mounting height. The mounting height of each lamp and reflective device must be measured from the center of the item, as mounted on the vehicle at curb weight, to the road surface.

S6.1.4.1 High-mounted stop lamps.

S6.1.4.1.1 A high-mounted stop lamp mounted below the rear window must have no lens portion lower than 153mm [6in] below the lower edge of the rear glazing on convertibles, or 77mm [3in] on other passenger cars.

BUT! Two things matter here: 1) The Lumina APV has high brake lights on the outside edges of the vehicle. 2) The existing tailgate design puts a key pressing (for the lock cylinder) right in the area where the CHMSL is supposed to be. So, I’d expect that GM requested a waiver when certifying the 1995 model (which would be the first year of the “required” light) and got it. The language about movable body panels (although really meant for vans with vertical-split doors on the back) probably helped.

TL;DR: They got as close as they could without redesigning the liftgate, the brake lights were high already, GM asked for and got a pass on this one.


Kinja'd!!! RazoE > DrJohannVegas
10/09/2015 at 09:28

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Makes sense. It’s also better than Toyota’s solution on its trucks. They just took a Corolla/Supra 3rd brake light, flipped it upside down and mounted it on the roof..=/