I got them from this HK store --
http://www.suntekstore.com/us-44-led...hts-amber.html. It was my first order with them, I wasn't sure how good they'd be (I also chose the free shipping). I was pleasantly surprised--I got my order in 14 days, everything was in great shape and working order. I won't hesitate to order from them again. They have the large strobes in red, too.
http://www.suntekstore.com/tr-2x22-l...gency-red.html