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Old 11-22-2009, 05:55 PM   #1
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I stopped by United Specialties and had their guy look at my truck. I've noticed some small marks in the aluminum skin on the bottom side of the cab overhang. He said water has gotten in and it's pushed some of the paint out there. He said there may have been some water sitting there that caused it. I had noticed some crappy gook that had come out of the trim area there when I first picked up the coach and drove it 300 miles home. That must have been the water that had been sitting there. My truck had been on the dealer's lot for almost a year and a half before I bought it. I always store it indoors so it doesn't get exposed to a lot of water now, only if it happens to rain when I've got it out. He said the water may have gotten in around the clearance lights. They had built my coach using 2" round clearance lights that sit in a rubber grommet. He said they no longer do it that way because they found the water can leak in that way. They now just cut a small hole in the skin to fish the wires out and use surface mount lights that they seal behind with silicone caulk so no water gets in. The problem I have is I've got large circular holes where all my lights are. I haven't pulled out out yet to measure but if the light is 2" diameter I found a spec that says the hole has to be 2.312" for the grommet. I did find a rubber grommet that doesn't have a huge hole in the back of it, it's got a small hole on the bottom edge to run the wire up through and out into the light housing. I suppose I could silicone in those grommets and that would most likely seal up okay. I'm also thinking it might be better to find a larger surface mount light and seal that over my holes. I'm not finding anything large enough high to cover a 2.312" hole tho. I did find these flange mount 2" lights that might work to seal into the holes:

I haven't been able to find one locally to look at and see if they're water tight between the light and that flange tho. Anybody ever seen one of these? I may have to just order one for $10.00 and check it out. Their description doesn't even say the hole size but I'm guessing since it's a 2" light it should be a drop in fit for a grommet size hole. If anybody has seen this type of flange light and thinks it would/wouldn't work please reply. And, if you can find any other type of surface mount light with at least 2.4" height that would be great. I'm liking the looks of those l.e.d. lights with the clear lense that light amber or red. I think those would look cooler on my white siding than the amber or red lenses do too. I can't find a 2" flange mount clear lense/amber light or clear lense/red light. Bummer. Thanks for any help.
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Old 11-23-2009, 07:17 AM   #2
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Bob, have you thought of just poping your grommets out and runing a bead of silicone in the groove to help seal them, if not that flanged you have there might be a good bet, as you may be able to get or make gaskets to go between the flange and the outer wall of your truck. (Or silicone)

Any surface mount would leave you with the question : what to do with the 2" hole behind the surface mount?

good luck,
-blizz
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Old 11-23-2009, 07:39 PM   #3
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Todd, the flange mount lights I think would be best. The problem is they need a 2.8" hole to fit into. I'd have to enlarge all my holes. Sealing the grommets might work. But, I'd want to get those other grommets with a small hole on the edge for the wires, not the regular grommets that have a huge hole. I think a flange would seal up better than a soft rubber grommet tho. I don't mind the large round hole behind a surface mount light if I can find a surface mount light large enough to cover it and have some room for the silicone to seal it too. What tool would a guy use to enlarge a 2.3" hole to 2.8"? A knockout tool wouldn't work because I don't have access to the back side to install it. A whole saw wouldn't work because it would float around. They need a small center hole for the drill bit to keep it centered. I wonder if I can find a flange mount light that is only 2.3" diameter on the back side of the fixture so it will fit into my holes?
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Old 11-23-2009, 08:31 PM   #4
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die grinder... or drum sander in a drill? just make a circle a bit bigger than you need in a piece of aluminum, then use a fine sharpie to draw the circle on your wall and grind out to the line, it doesn't have to be perfect, the flange will cover it.
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Old 11-23-2009, 08:42 PM   #5
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Aaahhhh, good idea. I'll keep that in mind if I can't find some nice surface mount ones to cover the holes.
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Old 12-09-2009, 11:39 AM   #6
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I got one of those lights and it is the correct diameter to fit the holes. So, I'm all set I guess. Just have to buy about 20 of them to replace all mine. And several tubes of silicone sealant.
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Old 12-10-2009, 01:16 PM   #7
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Anybody have a connection for these? My local dealer wants $9.98 per light. I need 23 of them (24 on the truck but I bought the one for the test fit).
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Old 12-10-2009, 06:25 PM   #8
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welcome to my world, I think "I'll do tis or I'll just do that" 200 here, 200 there// add up all the receipts and go YIKES!

under 10 dollars each, if they have all 24 I'd just buy them and get on with the project. even if you find them a dollar each cheaper its only 25 dollars.
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Old 12-10-2009, 07:44 PM   #9
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Ya I guess so. But I'm darn cheap. Remember? You had to buy me lunch I'm soo cheap. And I almost didn't get my truck washed I'm soo cheap. I'm figuring I'll order them up tomorrow. They don't stock this particular light but he can order them in for me. Whadaya think, just regular clear silicone sound okay? I want them to seal in good but don't want them impossible to get out. I should probably use something mildew resistant? Like marine grade or something?
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Old 12-15-2009, 09:07 AM   #10
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If you're still shopping, look online for trailer lights. $10 sounds a little pricey to me, I've found the round lights with the grommet for $5-7 in local parts stores. Granted that doesn't have your flange, but they're LED which generally seems to be at least 2-3x the price for the same size lamp.

I found backing plates for my 7,000 Dexter axles online, got 6 of them for the price of TWO in a box store 90 miles away. And that included shipping!
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