I did another cruise through on ebay and found this:
10x Cool White RV 1141 1156 BA15S T10 921 194 48 SMD Panel Interior LED Lights | eBay
I ordered them. I figure ten of them for 15.29 delivered would be a plan. I have some I ordered before that do not have the 1156 bases and I am thinking a delicate soldering job would allow me to use two of these panels.
I also just thought of another possibility I did with a Minnie Winnie I had about ten years back. The outside step light had a opaque cover and I got a piece of lexan and took the original lens from the step light and laid it over the Lexan with the shipping paper still on it and traced it out and put it on a jig saw and cut out the traced area, drilled the appropriate holes and put it on and had much more light at night. At least three times.
Might not be as spiffy looking at Airstream lighting but going on the theory of you can hit what you can't see
in the dark seems to apply here so I am thinking glue two panels on a piece of metal and do the lexan lens trick and get a fantastic amount of back up lighting for like 4.00 per light (including the Lexan).
Also expanding on your idea I am thinking of doing the same on the brake light but leaving the red lens on and getting a 24 LED panel and use it for the running light. That way the brake light would be four times brighter than the running light and really get their attention.
Some might think this over kill but I got rearended 27 months ago (at about 40 MPH) and it has messed by neck up and shoulder (was knocked cold in process) and now I have two spurs growing into discs between 5/6 and 6/7 and a Grade 3 concussion and it ended my competition shooting career that I have followed since 1958
Since that time I have become shall we say P A R I N O I D
about getting hit again. Wife has already had two spinal surgeries from being rear ended. On my 2500 HD I have four extra LED brake light strips with two high on camper shell and two low below the step bumper and red/white 3M reflective strips as well and on her car I got a impact asbsorbing bumper that goes in 2" receiver hitch Superbumper and Sparebumper Impact Attenuators Help Eliminate Rear End Collision Damage with a Patented Compression System that's Proven & Tested
We have been hit two times in parking lots with this bumper on and we were sitting still both times and there was no damage to us either time. I am thinking of ordering another one. I talked to the folks I got them from and they said they sell hundreds of these in Chicago area haha.
There are several variations and I got the one (scroll down page about 1/3rd of the way till you see the flat plate and put dayglow green reflective on it and it gets their attention day or night. This is not what I got exactly as I got sheets about 12" square but will give you an idea. When light hits it at night it reflects as white.
3M 12 Strips 3" x 8" Flo Yellow Green Diamond Grade Reflective Conspicuity Tape | eBay
I am a volunteer firefighter and we work a goodly number of wrecks at day and night and we work on the theory of if you are not seen you will be hit.
A new federal standard for emergency personnel vests came out about four years ago and this is THE color and as soon as we arrive at a scene the vests go on just as soon as we get out of vehicle.