When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
First, I wanted to make sure that you realized that not all of the LEDs are lit as driving lights. I believe only 3 are, and the other 4 light up as a turn signal (I may have that backwards though). So if you aren't looking at the light with the flashers or turn signal on, you won't see them all lit up.
Ford does not sell them that way. They only sell the mirror back, with the light already installed. They run about $80 from our Ford part sponsors I believe. Or you can buy a set of smoked or clear lights from Recon for around $100.