GMCforum
For enthusiast of the Classic GMC Motorhome built from 1973 to 1978. A web-based mirror of the GMCnet mailing list.

Home » Public Forums » GMCnet » Marker light gasket installation: caulk the wire hole?
Marker light gasket installation: caulk the wire hole? [message #265993] Thu, 13 November 2014 12:41 Go to next message
Otterwan   United States
Messages: 946
Registered: July 2013
Location: Lynnwood (north of Seattl...
Karma: 0
Senior Member
Just go new inner and outer roof light gaskets from JimK. When looking at the lights earlier this year I noticed that, in addition to the inner gaskets looking like black potato chips, the hole in the roof for the wires was not sealed. Looks like it would be worthwhile give it a shot of caulk when I reinstall the lights. Any comments on this idea? I know it could make them more difficult to remove in the future.

1977 Birchaven, Lynnwood WA - "We may not be able to stop all evil in the world, but I know that how we treat one another is entirely up to us."
Re: [GMCnet] Marker light gasket installation: caulk the wire hole? [message #265995 is a reply to message #265993] Thu, 13 November 2014 13:05 Go to previous messageGo to next message
James Hupy is currently offline  James Hupy   United States
Messages: 6806
Registered: May 2010
Karma: -62
Senior Member
Yes, throw away the factory clearance lights and replace them with one
piece sealed led lights. They are the same shape, and the foam gaskets that
come with them can easily be sealed watertight. I remove the moly anchors
that were built in factory leaks, and replace them with 3/8" dia. well
nuts. They can be effectively sealed from water intrusion. Stainless steel
screws finish the job. Brighter, and no more leaks. Jwid.
Jim Hupy
Salem, Or
78 GMC ROYALE 403
On Nov 13, 2014 10:41 AM, "David Orders" wrote:

> Just go new inner and outer roof light gaskets from JimK. When looking at
> the lights earlier this year I noticed that, in addition to the inner
> gaskets looking like black potato chips, the hole in the roof for the
> wires was not sealed. Looks like it would be worthwhile give it a shot of
> caulk
> when I reinstall the lights. Any comments on this idea? I know it could
> make them more difficult to remove in the future.
> --
> 1976 Royale "Twinkie II" Lynnwood WA - "We may not be able to stop all
> evil in the world, but I know that how we treat one another is entirely up
> to
> us."
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

Re: [GMCnet] Marker light gasket installation: caulk the wire hole? [message #265997 is a reply to message #265995] Thu, 13 November 2014 13:37 Go to previous messageGo to next message
Otterwan   United States
Messages: 946
Registered: July 2013
Location: Lynnwood (north of Seattl...
Karma: 0
Senior Member
Do you have a part number for the lights you would recommend?

1977 Birchaven, Lynnwood WA - "We may not be able to stop all evil in the world, but I know that how we treat one another is entirely up to us."
Re: [GMCnet] Marker light gasket installation: caulk the wire hole? [message #266001 is a reply to message #265995] Thu, 13 November 2014 14:48 Go to previous messageGo to next message
JJUNKSELL is currently offline  JJUNKSELL   United States
Messages: 58
Registered: July 2013
Location: MERIDEN CT
Karma: 0
Member
Hi Jim what thread was in those well nuts? I tried 8/32 rubber well nuts and they did not seem to hold the lite very tight, I could pull it off with my hand. I am going to get some jack nuts or rivet nuts, and install them. Hopefully the problem will be solved. Thanks Dave

Dave, 76 PB moneypit.Center of CT.
Re: [GMCnet] Marker light gasket installation: caulk the wire hole? [message #266006 is a reply to message #265997] Thu, 13 November 2014 15:12 Go to previous messageGo to next message
George B. is currently offline  George B.   United States
Messages: 213
Registered: February 2012
Karma: 1
Senior Member
The replacement LED clearance lights I used were Grote G5052 Red and G5053 for the amber. Under $10 each including gasket

George Butts Las Vegas Nevada 73 "Custom 26' Q" & 76 23' Birchaven 71 Honda 600 Coupe & 01 Tracker Toads
Re: [GMCnet] Marker light gasket installation: caulk the wire hole? [message #266012 is a reply to message #265997] Thu, 13 November 2014 15:43 Go to previous message
USAussie is currently offline  USAussie   United States
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
Senior Member
David,

Here's the ones I installed on Double Trouble years ago:

http://www.ebay.com/itm/LED-Amber-Truck-Bus-RV-Roof-Cab-Marker-Clearance-Light-/140855421836?vxp=mtr&hash=item20cba32b8c

http://www.ebay.com/itm/LED-Red-Truck-Trailer-Roof-Cab-Marker-Clearance-Lights-/140870636395?vxp=mtr&hash=item20cc8b536b

There is a down side to these lights, as you can see they have only one lead because they are meant to be attached to a truck with a
metal cab roof. They get their ground through one of the mounting screws. I had to remove the glyptal insulation on the bottom of
the light and solder a ground wire to the light. The foam pad they come with is 3/8" thick and won't leak. While your at it replace
the screws that hold the lights to the GMC roof with Stainless Steel screws (6-32 x 1").

Regards,
Rob M.
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426



-----Original Message-----
From: David Orders

Do you have a part number for the lights you would recommend?

_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist



Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426
Previous Topic: [GMCnet] Front Rotor, Bearing and Brake Options
Next Topic: [GMCnet] GMC wife needs an airbag...
Goto Forum:
  


Current Time: Wed Oct 02 23:34:50 CDT 2024

Total time taken to generate the page: 0.00819 seconds