Just put them in a 2010 model M21 caravan and you'll need about 20 of them. They are perfect in color, straight out of the box and really well made overall. In hot climates those old headlights heat the camper up 40 watts at a time so it can take 400 watts or more to burn out old lightbulbs, then the air conditioning has to work harder to get rid of the excess heat so you're doubly taxed! They only use a few watts each, and the RV cooling is better and I use a lot less electricity.
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