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04-20-2016, 03:09 PM
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#1
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Senior Member
Fleetwood Owners Club
Join Date: Dec 2010
Location: Mullica Hill NJ
Posts: 153
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Marker or Clearance Lights
How do you use them if at all? Why are they on a class A. I use a GPS that steers me clear of short overhangs...but I have come close while driving through the south. Is there another use for these lights. I have a switch that will blink them.
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04-20-2016, 03:22 PM
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#2
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Senior Member
Official iRV2 Sponsor
Join Date: May 2011
Posts: 8,305
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Quote:
Originally Posted by Voyager35L
How do you use them if at all? Why are they on a class A. I use a GPS that steers me clear of short overhangs...but I have come close while driving through the south. Is there another use for these lights. I have a switch that will blink them.
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The lights are required to meet NHTSA requirements for large vehicles:
Truck/Bus/MPV Poster Table for Website
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Joel (AKA docj)--
RV Technology Specialist
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04-20-2016, 03:42 PM
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#3
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Community Moderator
Newmar Owners Club
Join Date: Feb 2011
Location: Point Pleasant Beach, NJ
Posts: 31,248
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A lot of us will blink the lights if we are being passed at night by a truck/rv to let them know they have cleared us and they can return to the lane You should also have a switch that will blink your headlights and that is used more often for the same thing. It can also be as a way of saying Thanks when someone flashes it's okay for you to return to the lane after passing. It's more of a courtesy thing.
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Tony & Ruth........... FMCA#F416727
2016 London Aire 4519, Freightliner chassis, Cummins ISX, 2018 Jeep Wrangler Unlimited, Blue Ox Avail with AF1. TST 507 TPMS
No amount of money can buy you an extra second of time.
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04-20-2016, 10:59 PM
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#4
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Senior Member
Newmar Owners Club Freightliner Owners Club
Join Date: May 2012
Location: Today? Clayton, North Carolina
Posts: 5,093
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The marker and clearance lights are not there so you can see some low overhang or something, they are there so other people or vehicles can identify and make out the size and shape of your vehicle. Marker/clearance lights are controlled by your headlight switch, and go on or off with your headlights/running lights.
The Amber (or red) lights on the side/front/rear of the coach in the area about 2 - 6 ft off the ground are marker lights, and their specific position will inform those who know just how big your vehicle is, whether it's articulated, etc. The Amber/red lights near your roofline are clearance lights, and they tell others how high you are. The light patterns front and rear (1-3-1 for most vehicles) are stipulated by federal regs.
The momentary switch you're talking about used to be referred to as the ICC flash, named for the Interstate Commerce Commission, the federal agency that until 1996 was charged with the regulation of- you guessed it-- interstate commerce.... Well, any surface transportation involved in interstate commerce. Basically trucks, buses, and trains. That switch simultaneously flashes your running lights, marker lights, and clearance lights-- and in many cases, your headlights, too.
John & Diane, fulltiming since '12
'02 DS, FL, Cat, '04 Element
NHSO RVM103
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John and Diane (RIP Lincoln, 21 FEB 22) RVM103 NHSO
Fulltimers since June, 2012
2002 Dutch Star 40, Freightliner, Cat 3126, 2004 Element
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04-21-2016, 07:59 AM
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#5
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Senior Member
Country Coach Owners Club
Join Date: Aug 2015
Location: Santa Rosa, CA
Posts: 722
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My ICC switch is just an On/Off toggle and not a momentary toggle. Shouldn't it be on a momentary toggle switch so as not to accidentally leave the marker and clearance lights in the off position? I'm wondering if the PO may have replaced the toggle switch with an incorrect part.
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Russ
1990 Country Coach Concept 36' Antares
2006 Jeep Wrangler X, Blue Ox Towbar
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04-21-2016, 08:58 AM
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#6
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Senior Member
Newmar Owners Club Freightliner Owners Club
Join Date: May 2012
Location: Today? Clayton, North Carolina
Posts: 5,093
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Marker or Clearance Lights
Rsponsford........ Yes, the ICC flash ought to be a momentary. If someone's been messing with the wiring you ought to also check the flash system for proper operation. The flash circuitry typically includes a couple of relays so that if you're running in daytime with running lights off, hitting the ICC will momentarily turn them on. But if you're driving with running/headlights on, hitting the ICC will momentarily turn them off.
John & Diane, fulltiming since '12
'02 DS, FL, Cat, '04 Element
NHSO RVM103
__________________
John and Diane (RIP Lincoln, 21 FEB 22) RVM103 NHSO
Fulltimers since June, 2012
2002 Dutch Star 40, Freightliner, Cat 3126, 2004 Element
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04-21-2016, 09:06 AM
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#7
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Senior Member
Country Coach Owners Club
Join Date: Aug 2015
Location: Santa Rosa, CA
Posts: 722
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JFXG
Thanks for the info! I've made sure I'm running with the lights on but I will replace the switch with a momentary switch. Thanks again!!!
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Russ
1990 Country Coach Concept 36' Antares
2006 Jeep Wrangler X, Blue Ox Towbar
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