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Old 07-04-2020, 04:48 AM   #1
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Join Date: Apr 2017
Location: Anchorage
Posts: 576
Engineering a light mount

My SuperDuty has no holes in the rear bumper to mount lights. I have a nice pair of work lights that I would like to mount on the ends of the cross tube for the reciever hitch. The square tube is 2.5" ID and the mounting bolts for the lights are 5/16. What I would like to do is use a threaded end cap but the largest I can find are only 2"
There are plenty of rubber and LDPE caps out there that will fit but I don't think they will hold a light if I drilled a hole in the middle to mount the light.
Not sure if I could have some metal ones fabricated at a reasonable price either. Would it be an issue sealing the crosstube? I could silicone in the LDPE and rubber ones in. LDPE seems like it would be the best bet? Thoughts?
I do not want to cut or drill anything on the truck.
2016 Ford F350 CC 6.7 4x4 SRW (Ghost Rider)
2017 Cougar 29 RKSWE (The Tumble Weed)
Connected by a Curt 15K WDH W/Sway Control
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Old 07-04-2020, 07:08 AM   #2
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Join Date: Mar 2011
Location: Gaylord
Posts: 25,264
On my 2013 F250 hitch receiver, the ends (left and right) are open. I used some hollow 2" square tube stock, built two extensions, plugged them into the ends of the receiver and plugged the lights into the bumper 7 pin connector. We almost always use the "in bed 7 pin connector" with the fifth wheel, so I just got in the habit of leaving on the truck. I used square U bolts to wrap around the extension and the end of the receiver (sort of like an anti-rattle clamp) to hold them in place. When I traded the truck, I forgot to take them off and just haven't gotten around to building another set... Square tubing is in the pole barn, I just need to cut a couple of 8" lengths and drill holes for the LED lights that are also sitting on my workbench, again, in the pole barn....

2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
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light, mount

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