Just found this site while working on some other stuff:
This company manufactures LED lighting for marine, aviation, automotive, and especially for the off-road markets.
They only have a couple of LED's listed for RV's at the moment, but certainly worth a look.
Also, check out their torture test video:
'11 Cougar 326MKS loaded with mods
'12 Ford F250 SuperCab 6.7 PowerStroke Diesel
KD2IAT (146.520) GMRS:
WQPG808 (462.675 TPL 141.3)