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12-04-2008, 12:41 PM
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#1
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1 Rivet Member
Currently Looking...
Divide
, Colorado
Join Date: Nov 2008
Posts: 16
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Roof lights on 3/4 ton trucks?
I've noticed that all dually trucks have roof mounted cab lights but not all 3/4 tons do. What are the laws reguarding the lights and who has to have them?
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12-04-2008, 01:26 PM
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#2
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Rivet Master
1991 34' Excella
Princeton
, New Jersey
Join Date: Aug 2003
Posts: 7,070
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Not sure there is a law governing none commercial vehicles. My 3/4 ton Suburban has roof light. I think the reason is the truck came with a 1 ton suspension and the manufacture just includes them as part of the package.
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WBCCI 12156 AIR 3144 WACHUNG TAC NJ6
2004 Excursion 4x4
1991 34 ft. Excella +220,000 miles, new laminated flooring, new upholstery, new 3200 lbs axles
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12-04-2008, 01:33 PM
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#3
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Rivet Master
2007 30' Classic
Hernando
, Mississippi
Join Date: Sep 2006
Posts: 759
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As far as I know they are options on both 3/4 and 1 ton and above trucks.
__________________
Rgds,
Scott
Air 16426
Fully retired now!
Remember:
Never start anything before noon and always plan on being finished by 5.
I will never HAVE to be anywhere ever again!
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12-04-2008, 02:29 PM
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#4
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Rivet Master
2006 25' Safari FB SE
St. Cloud
, Minnesota
Join Date: Aug 2003
Posts: 13,280
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My 3/4 ton Sierra is prewired for an auxiliary roof mounted lamp -- just looked at the manual and it seems principally because my truck has the RPO VYU snowplow prep package. The diagram shows the prewire coming up the curbside B-pillar and the looped wire laying on the headliner above the passenger's head (forward of the rib between the B-pillars).
Another benefit of the GM snowplow package is dual batteries -- twice as much to keep an eye on or replace, eh? I look on dual batteries as a positive though. [ getting far afield from the original question: http://www.airforums.com/forums/f449...ucks-3770.html ]
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12-04-2008, 02:43 PM
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#5
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Rivet Master
2005 39' Land Yacht 390 XL 396
Common Sense
, Texas
Join Date: Sep 2007
Posts: 5,319
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I believe they are required on any truck with dual rear wheels because of the width. Same with the side clearance lights in the fenders of the duallys.
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Regards,
Steve
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12-04-2008, 02:48 PM
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#6
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Rivet Master
2008 27' International FB
1964 19' Globetrotter
1955 26' Cruiser Overlander
Austin
, Texas
Join Date: Sep 2004
Posts: 608
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I believe they are required on all dual rear wheel trucks (both the roof clearance and the side clearance on the extended fenders). They are optional on 3/4 ton trucks with single rear wheels, but required on anything that is wider than 80 inches.
GM did put them on the 1/2 and 3/4 ton pickups and suburbans with Quadra-steer as well as on the rear renders. I think this was done to differentiate these units visually, as well as to note that the rear wheels did indeed extend out ever so slightly while engaged with the 4 wheel steering...
Roof clearance lights are good for visibility, and some like them for looks. I think it all started when roads were single lane and the clearance lights help distinguish the height and width of the vehicle, especially to oncoming traffic. Other than that, it does look cool at night...
Caution that some have leaked before...
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Kevin & Prim Li
Bandit the Siberian Husky (RIP) & "G" the Min-Pin (RIP)
Cosmo the Custom 2008 27FB Intl CCD
Maxwell the 1964 Globe Trotter
Name TBD the 1955 Overlander
WBCCI # 6155
AIR # 6155
2nd love - 2006 28' Safari LS
1st love - 2004 19' CCD Bambi
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12-04-2008, 04:32 PM
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#7
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Retired.
Currently Looking...
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, At Large
Join Date: Jun 2003
Posts: 21,276
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The 3/4 ton cab lights are an optioon. From what I've found, this was because "commercial vehicles" had cab lights, and most Home Owners Associations forbid parking "commercial vehicles" in the development. Without the cab lights, a 3/4 ton truck could be parked there, without running afoul of HOA restrictions.
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Meddle not in the affairs of dragons, for you are crunchy, and taste good with ketchup.
Terry
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12-04-2008, 06:22 PM
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#8
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4 Rivet Member
2004 30' Classic Slideout
Between Here
, And There
Join Date: Feb 2005
Posts: 379
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Vehicle lighting requirements are predicated on - Federal Motor Vehicle Safety Standard 108 (FMVSS 108). I am sure you can do a google search to get a copy of the document if you enjoy reading extremely boring government documents. Bottom line any vehicle more than 80" wide require the clearance lights.
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12-04-2008, 06:24 PM
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#9
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Rivet Master
1999 34' Excella
Joshua
, Texas
Join Date: Apr 2002
Posts: 548
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Years ago, they were called "chicken lights". When you were driving down a 2-lane road at night and saw a truck coming with the clearance or "chicken" lights, it was like playing chicken with the truck to see if you could safely go by them.
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History doesn't repeat itself, people do!
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12-04-2008, 07:15 PM
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#10
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Rivet Master
1977 27' Overlander
Trotwood
, Ohio
Join Date: Jul 2007
Posts: 2,153
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Cab marker lites are an Option on 3/4 and 1 ton Pickups. I ask Why my 1 ton did not have them. I am reasonably sure they are not require until the vehicle reachs 10k GVW and or are licensed as a commerical vehicle. Google Federal Vehicles Lighting Standards.
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Roger & MaryLou
___________________
F350 CREWCAB SW LONG BED
7.3 liter Power Stroke Diesel
1977 27ft OVERLANDER
KA8LMQ
AIR # 22336 TAC- OH-7
May your roads be straight and smooth and may you always have a tailwind!
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12-04-2008, 07:32 PM
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#11
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Tom, the Uber Disney Fan
2006 30' Safari
Orlando
, Florida
Join Date: Aug 2004
Posts: 4,693
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I am in the minority it seems. I didn't want them on either of the 3/4 ton trucks that I have or have owned. I thought it makes the truck look commercial and I didn't want that look for my truck. I guess it depends on individual taste. I also didn't want 4X4. I figured I wasn't going anywhere I would need 4X4 and we don't get enough snow in the Atlanta area to justify it.
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2006 30' Safari - "Changes in Latitudes"
2008 F-250 Lariat Power Stroke Diesel Crew Cab SWB
Family of Disney Fanatics
WBCCI# 4821
https://streaminacrossamerica.com/
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12-04-2008, 08:18 PM
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#12
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Moderator
2015 25' FB Flying Cloud
2012 23' FB Flying Cloud
2005 25' Safari
Santa Rosa Beach
, Florida
Join Date: Jul 2006
Posts: 13,159
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Actually, it is Federal Law that requires marker lights. on any motor vehicle that has a wheel track in excess of 80". That is why all dually pickups have the five ambers on the front roof, amber and red markers forward and aft on the rear axle, and three red markers on the rear of the vehicle.
The manufactures offer the option of the five roof ambers for single rear wheel 3/4 and 1 ton pickups. they are not required, even on 1 tons, unless they are duallys.
I found this out when I did some research after buying my first Quadrasteer Suburban 2500 a couple of years ago. A Quadrasteer Suburban comes standard with all the markers, roof, sides, and rear, as with a dually pickup. At first, I thought it was a marketing thing to make the Suburban look more buff. It turns out that that a Quadrasteer has a rear track that is 5" wider than the front track, and is 83", requiring the marker lights.
Brian
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SuEllyn & Brian McCabe
WBCCI #3628 -- AIR #14872 -- TAC #FL-7
2015 FC 25' FB (Lucy) with ProPride
2020 Silverado 2500 (Vivian)
2023 Rivian R1T (Opal)
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02-07-2009, 07:58 AM
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#13
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New Member
Glidden
, Iowa
Join Date: Feb 2009
Posts: 2
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Does anyone know the measurements for those amber cab lights for a ford?
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02-07-2009, 08:10 AM
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#14
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Rivet Master
1983 34' Excella
1967 24' Tradewind
Little Rock
, Arkansas
Join Date: Nov 2006
Posts: 3,825
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Thanks for the information, Brian.
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Vaughan
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02-07-2009, 08:34 AM
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#15
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Rivet Master
1967 22' Safari
1960 Caravel
Edmonds
, Washington
Join Date: Aug 2004
Posts: 2,499
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Quote:
Originally Posted by bikefreak193
Does anyone know the measurements for those amber cab lights for a ford?
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Take a look Here and Here. This should help.
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Lee
1973 F-250 4X4 390
1965 Chevy Suburban 454
AIR 6030
WBCCI 4258
TCT
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02-07-2009, 10:51 PM
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#16
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New Member
Glidden
, Iowa
Join Date: Feb 2009
Posts: 2
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Do you know where i could get a free wiring diagram 4 a 1978 ford bronco
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02-08-2009, 09:56 AM
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#17
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Rivet Master
1967 22' Safari
1960 Caravel
Edmonds
, Washington
Join Date: Aug 2004
Posts: 2,499
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Try this 78 Ford truck wiring diagram. If that doesn't work try the public library. Library's have a good auto section that includes repair manuals.
__________________
Lee
1973 F-250 4X4 390
1965 Chevy Suburban 454
AIR 6030
WBCCI 4258
TCT
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