The 18W is a measure of power consumption, not light output. LEDs are more efficient than incandescent/halogen lights, so these 18W LEDs are putting out much more light than an 18W halogen would. To compare light output, look for a spec on Lumens or other light output units.
My TH has a floodlight on the rear and I find it worthless for backing.
I haven't gotten around to it but my thoughts are to place floods under the front of the trailer pointing rearward and out slightly. My co-pilot is responsible for seeing what is behind the trailer, I need to see where my tires are tracking.
I have found that backing is much easier by using two hand towels to cover the tail and reverse lights on the TV. The glare on the front of the trailer blinds me from seeing anything beyond that point unless I cover the TV lights.
Taking naps regularly prevents old age, especially napping while driving!
I wired mine up with a switch to come on with the back up's on the truck and on with a manual switch through the trailer when not connected with the umbilical. I love them. Backing in at night got a whole lot easier. Doesn't happen often, but nice to have when it does. Also alerts others at gas stations, etc. One of the best mods I did so far.
"It`s not important that you know all the answers, it`s only important to know where to get all the answers" Arone Kleamyck
"...An unarmed man can only flee from evil, and evil is not overcome by fleeing from it." Col. Jeff Cooper
Sunset Creek 298 BH
I wired a set of gromet fit clear LED's to the rear bumper of our 300BH Passport shortly after buying it and I have to agree that it was one of the best upgrades I have made to the camper since buying it. I came off of the junction box on the tongue of the camper to a relay that connected the camper house battery to the lights. So, the truck reverse light is only being used as a signal to turn the reverse lights on (no load on the truck battery). The primary current load for actually lighting the reverse lights up is coming from the camper battery. This had made the process of backing onto a site in the dark a much more enjoyable experience. Especially given that our camper is 33'6" long. you can see exactly where you are putting the camper using the truck tow mirrors. I do believe they have been responsible for the wife and I remaining a camping couple. I highly recommend doing the upgrade, and I highly recommend wiring in the relay (with a fuse) becasue it is just too easy not to do it that way.
'08 Ford F150 Supercrew Lariat 4x4 w/6.5' bed 5.4L Triton, 3.73 rear, tow package, K&N air filter
'10 Passport 300BH w/Bulldog acc hitch, Valley bike rack, rev lights
Husky wt dist hitch w/ dual friction anti-sway controls
Primus trailer brake controller