The 1156 was a false lead - looking at enlargements on their website both the 1156 and 1157 bulbs have the same print on the top of the light. I think the LED unit is the same on both. But the pins on a 1156 are at the same distance from the bottom of the base instead of unequal like an 1157.
Horseracejudge - that sounds like exactly my experience. I'll see what Superbrightled's has to say about it tomorrow.
Bummer - they are a lot brighter. I would like to get them to work.
