Which brake light?

My bike has the baja DS kit, but it has no brake light/running light, it's wired for it, but doesn't have one currently on it. I really like the idea of just using the running light that is already on the rear fender and putting a running/brake light in that housing rather than putting a kit like this http://www.rockymountainatvmc.com/p/44/54/227/1156/-/25859/Tusk-L.E.D.-Tail-Light-Brake-Light?term=universal+brake+light+kit with a spot to mount the plate. I was thinking of just ordering the xr insert from here http://www.procycle.us/dskits/dskit.htm I really like the LED light with that tusk kit, but I just want the light to mount under my fender. What are you guys doing for brake lights? Keep in mind I don't want my license plate down there, it's mounted on top of the back fender and I like it there.

You need this 1....
https://www.wheelingcyclesupply.com/shop/product/drc-led-inner-tail-light-kit/53
Get the 1 for the 650R...part number D45-19-011

I have the led from wheeling cycle supply, works great. The only problem I had was shipping automatically went to next day air and when I saw $100 for shipping I almost fell out of my chair. I emailed Forrest and he took care of everything.