Here's the site for the flashing brake lights:
The Home Of Flashing Brake Lights
As for the dummy plug, I posted a response in the Fog Light DIY sticky with pics on how to easily remove it. Before you start you dremel a slot in the stud. You then stick a flathead through your wrench and put it in the slot to hold the stud still while you remove the nut. Works best with a ratcheting wrench.