Home » Public Forums » GMCnet » [GMCnet] Dome light in cockpit
| [GMCnet] Dome light in cockpit [message #229499] |
Tue, 12 November 2013 11:42  |
Vince Behm
Messages: 18
Registered: September 2007
Karma: 0
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Junior Member |
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I have research previous post on the forum regarding the operation of the
three position switch on the dome lights in the cockpit and still have
questions. One wire (orange) appears to be hot all of the time, thus
allowing the light to be switch on at anytime by placing the switch in the
up position(on my coach a 1976 El II). The middle position is off. Moving
the switch down (on my coach) does nothing. There is an addition wire to
the switch that is white.
Can anyone tell me the source of the voltage to that white wire?
I have read that it may be energized by the door switch or the head light
switch. Since my door switch is missing and so is the wire. Neither works
in my coach.
Can anyone tell me the color of the door switch wire and where it was run?
Thanks
--
Vince Behm
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| Re: [GMCnet] Dome light in cockpit [message #229509 is a reply to message #229499] |
Tue, 12 November 2013 12:23  |
powerjon
Messages: 2446
Registered: January 2004
Karma: 5
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Senior Member |
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Vince,
It would help greatly if you expanded your signature to include you coach year and model along with the state you live in would be great help. I see it in the body of the message, but it you put it in your signature it is always there. If you don’t have the wiring diagrams for your coach you can go here and download them.
http://www.bdub.net/factory-manuals.html
I have uploaded 2 snapshots of the dome light wiring.
http://www.gmcmhphotos.com/photos/general-pictures/p51531-dome-light-wiring.html
http://www.gmcmhphotos.com/photos/general-pictures/p51532-dome-light-wiring.html
The white wire on the dome toggle switch in the down position goes to the headlight switch and when you turn the dimmer on the switch to full left to turn the instrument light brighter it closes the contact in the switch providing a ground contact to the white wire. See second drawing. The black wire is the instrument cluster ground and the orange wire is hot all the time. The Door switch is not in the circuit.
Hope that this helps.
JR Wright
78 Buskirk Stretch
75 Avion
Michigan
On Nov 12, 2013, at 12:42 PM, Vince Behm <vbehm@goodglass.com> wrote:
> I have research previous post on the forum regarding the operation of the
> three position switch on the dome lights in the cockpit and still have
> questions. One wire (orange) appears to be hot all of the time, thus
> allowing the light to be switch on at anytime by placing the switch in the
> up position(on my coach a 1976 El II). The middle position is off. Moving
> the switch down (on my coach) does nothing. There is an addition wire to
> the switch that is white.
>
> Can anyone tell me the source of the voltage to that white wire?
>
> I have read that it may be energized by the door switch or the head light
> switch. Since my door switch is missing and so is the wire. Neither works
> in my coach.
>
> Can anyone tell me the color of the door switch wire and where it was run?
>
> Thanks
>
> --
> Vince Behm
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
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| Re: [GMCnet] Dome light in cockpit [message #229565 is a reply to message #229499] |
Tue, 12 November 2013 17:44 |
mickey szilagyi
Messages: 273
Registered: January 2013
Karma: 0
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Senior Member |
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Yup, that's what ours does. In the down position it will come on when the headlight switch is turned all the way to the left, just like it used to turn on the dome light in an older car. We are a little disappointed that it works like that. You can just as easily turn it on with the dome light switch. We were hoping that in the down position it would come on when the galley light comes on and are looking to rewire it that way. The dome light on the right over the passenger front seat has the same switch but the down position doesn't do anything. We would wire that also to come on with the galley light.
Anyone already do this or have another idea? Is there room above the headliner to run several more wires and several back to the light above the sink?
Thanks,
Mickey
1977 Kingsley, 403, Lansing, MI
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| Re: [GMCnet] Dome light in cockpit [message #229585 is a reply to message #229565] |
Tue, 12 November 2013 19:05 |
Bruce Hart
Messages: 1501
Registered: October 2011
Location: La Grange, Wyoming
Karma: 5
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Senior Member |
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On the Co-op site Jim has a little different arrangement with the light.
He installs one of the reading lights like that on the bottom of the
cabinet in the rear area. He than uses the switch to power his radio
speaker on or off up front and on or off with the speakers in the back.
Check out his site.
http://www.gmccoop.com/information.htm
*Rebuilding your driver/ pass. front speaker/light inserts*
A long title for a small thing but if you're looking for details in your
interior restoration-- here's one for you. The Driver & passenger speaker
is incorporated into the panel which also holds the "map" lights on either
side of the front of the coach. Did I say map light, these lights have
frosted diffuser lens which light up the entire cockpit. When driving at
night, that may not be a good thing!
<http://www.gmccoop.com/images/Front-grill-origional.jpg>We have the
added issue of last year having the lens go obsolete from GM.
So what do we do? Install a better light and add a feature! The panels
you see here have been stripped down, vinyl dyed and reassembled, they look
great but we have a broken lens-- what do we do? How bout adding a
directional aircraft "bullet" light assembly
<http://www.gmccoop.com/images/Front-grill-complete.jpg>
This fixture fits perfect into the original light recess, we have them in
clear (as you see here, black and gold. They cost only $9 each and sport
its own on/off switch. Why is that important or even needed with the big
chrome original switch? Well, now that the light will control its
operation we have a switch that can do something else, in this case I use
the switch to control the 3 1/2" speaker as well as the bedroom speaker
operation. In the center position, both cockpit and bedroom speakers are
off, then you can choose to operate either speaker by flipping this
original light switch-- a great feature when you want to listen to the race
on the radio while Mom is reading a book! Besides, the light is directed
wherever you want it
<http://www.gmccoop.com/images/Front-grill-done.jpg>does not blind you
and the finished panel looks great too.
good luck.
On Tue, Nov 12, 2013 at 4:44 PM, Mickey Szilagyi
<mickey@apex-internet.com>wrote:
>
>
> Yup, that's what ours does. In the down position it will come on when the
> headlight switch is turned all the way to the left, just like it used to
> turn on the dome light in an older car. We are a little disappointed that
> it works like that. You can just as easily turn it on with the dome light
> switch. We were hoping that in the down position it would come on when the
> galley light comes on and are looking to rewire it that way. The dome
> light on the right over the passenger front seat has the same switch but
> the down position doesn't do anything. We would wire that also to come on
> with the galley light.
>
> Anyone already do this or have another idea? Is there room above the
> headliner to run several more wires and several back to the light above the
> sink?
>
> Thanks,
> --
> Mickey
> 1977 Kingsley, 403, Lansing, MI
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Bruce Hart
1976 Palm Beach
Milliken, Co
GMC=Got More Class
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Bruce Hart
1976 Palm Beach
1977 28' Kingsley
La Grange, Wyoming
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| Re: [GMCnet] Dome light in cockpit [message #229631 is a reply to message #229565] |
Wed, 13 November 2013 03:28 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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| mickey szilagyi wrote on Tue, 12 November 2013 17:44 |
Yup, that's what ours does. In the down position it will come on when the headlight switch is turned all the way to the left, just like it used to turn on the dome light in an older car. We are a little disappointed that it works like that. You can just as easily turn it on with the dome light switch. We were hoping that in the down position it would come on when the galley light comes on and are looking to rewire it that way. The dome light on the right over the passenger front seat has the same switch but the down position doesn't do anything. We would wire that also to come on with the galley light.
Anyone already do this or have another idea? Is there room above the headliner to run several more wires and several back to the light above the sink?
Thanks,
|
It is doable. First keep in mind that you are going to have to pull some wires. The dome light is powered from the engine battery. The rest of the lighting in the coach is powered from the house battery(s). This also means also there are two different grounds and you do not want to get them connected together through the lighting circuits. The switching of the dome light is done on the ground side. The switching of the house lights are done on the hot or +12 volt sides. It could be done with one or two wires pulled from front to rear and some diodes or relays. I do not think it is worth the effort.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] Dome light in cockpit [message #229635 is a reply to message #229585] |
Wed, 13 November 2013 05:30 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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Very nice Bruce and JimB.
by the way, did you know that
Burt and Fay make a copy of the fiberglass panel - for sale
not shown here (give them a call)
http://www.bdub.net/curtis-unlimited/index.html
On Tue, Nov 12, 2013 at 5:05 PM, Bruce Hart <hartsgmc@gmail.com> wrote:
> On the Co-op site Jim has a little different arrangement with the light.
> He installs one of the reading lights like that on the bottom of the
> cabinet in the rear area. He than uses the switch to power his radio
> speaker on or off up front and on or off with the speakers in the back.
> Check out his site.
>
> http://www.gmccoop.com/information.htm
>
> *Rebuilding your driver/ pass. front speaker/light inserts*
>
> A long title for a small thing but if you're looking for details in your
> interior restoration-- here's one for you. The Driver & passenger speaker
> is incorporated into the panel which also holds the "map" lights on either
> side of the front of the coach. Did I say map light, these lights have
> frosted diffuser lens which light up the entire cockpit. When driving at
> night, that may not be a good thing!
> <http://www.gmccoop.com/images/Front-grill-origional.jpg>We have the
> added issue of last year having the lens go obsolete from GM.
> So what do we do? Install a better light and add a feature! The panels
> you see here have been stripped down, vinyl dyed and reassembled, they look
> great but we have a broken lens-- what do we do? How bout adding a
> directional aircraft "bullet" light assembly
> <http://www.gmccoop.com/images/Front-grill-complete.jpg>
> This fixture fits perfect into the original light recess, we have them in
> clear (as you see here, black and gold. They cost only $9 each and sport
> its own on/off switch. Why is that important or even needed with the big
> chrome original switch? Well, now that the light will control its
> operation we have a switch that can do something else, in this case I use
> the switch to control the 3 1/2" speaker as well as the bedroom speaker
> operation. In the center position, both cockpit and bedroom speakers are
> off, then you can choose to operate either speaker by flipping this
> original light switch-- a great feature when you want to listen to the race
> on the radio while Mom is reading a book! Besides, the light is directed
> wherever you want it
> <http://www.gmccoop.com/images/Front-grill-done.jpg>does not blind you
> and the finished panel looks great too.
>
> good luck.
>
>
> On Tue, Nov 12, 2013 at 4:44 PM, Mickey Szilagyi
> <mickey@apex-internet.com>wrote:
>
> >
> >
> > Yup, that's what ours does. In the down position it will come on when
> the
> > headlight switch is turned all the way to the left, just like it used to
> > turn on the dome light in an older car. We are a little disappointed
> that
> > it works like that. You can just as easily turn it on with the dome
> light
> > switch. We were hoping that in the down position it would come on when
> the
> > galley light comes on and are looking to rewire it that way. The dome
> > light on the right over the passenger front seat has the same switch but
> > the down position doesn't do anything. We would wire that also to come
> on
> > with the galley light.
> >
> > Anyone already do this or have another idea? Is there room above the
> > headliner to run several more wires and several back to the light above
> the
> > sink?
> >
> > Thanks,
> > --
> > Mickey
> > 1977 Kingsley, 403, Lansing, MI
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> >
>
>
>
> --
> Bruce Hart
> 1976 Palm Beach
> Milliken, Co
> GMC=Got More Class
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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| Re: [GMCnet] Dome light in cockpit [message #229739 is a reply to message #229631] |
Wed, 13 November 2013 18:43 |
mickey szilagyi
Messages: 273
Registered: January 2013
Karma: 0
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Senior Member |
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| Quote: |
It is doable. First keep in mind that you are going to have to pull some wires. The dome light is powered from the engine battery. The rest of the lighting in the coach is powered from the house battery(s). This also means also there are two different grounds and you do not want to get them connected together through the lighting circuits. The switching of the dome light is done on the ground side. The switching of the house lights are done on the hot or +12 volt sides. It could be done with one or two wires pulled from front to rear and some diodes or relays. I do not think it is worth the effort.
|
Ken,
Thanks for pointing that out. I now realize that the galley light system works off the house batteries and that's probably why the front dome lights aren't included in that circuit in the first place. For now I think we'll leave well enough alone. We have plenty of other more important things to work on.
Mickey
1977 Kingsley, 403, Lansing, MI
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