BoonHauler: Yes, that is a Atwood 7920-II 18,000 BTU input furnace. Good eye!
A little side project here. I was planning to make some outdoor floodlights for our camper. I wanted very bright, low profile, LED lights with adjustable intensity. Hard to find cheap so I was going to make my own.
While at Camping World this past weekend, I saw these incandescent porch lights for $9.95. I didn't care about the guts but the housing and lens looked about perfect (and very hard for me to make myself). I purchased some and yesterday converted them into (insanely) bright outdoor floods for our camper. For the LED elements I used the modules out of failed 450 lumen 7.5 watt household style 60 watt bulbs. It turns out the electronics in this model fail after a short while because of poor quality but the LED elements are perfectly fine. The LED elements are mounted to a aluminum backed circuit board and quite robust.
The LED series string runs on about 36V DC at 250mA so I used a little potted DC-DC current regulated converter to drive two of them in parallel (this particular model is a 700mA Flexblock by LuxDrive). The current (and thus light output) is controlled by a simple resistor (or potentiometer for variable light intensity).
I cut a little 1/8" thick aluminum plate to mount the flat LED modules then bent a 1/16" thick aluminum bracket to hold this plate at angle. LEDs do generate some heat but it is likely some of that will flow through the aluminum bracket into the aluminum skin of our RV. At any rate, it is a lot better heat dissipation than the little LED incandescent replacement bulbs you see in stores.
The last photo shows it running at about 80% of full power. It is saturating the camera and my eyes still are a bit sore from looking at it from 12 feet away. One side of the camper will have two of these :E Don't camp too close to me if you want to sleep!
