I noticed that the third brake light on my Mustang blinks when I have the brakes on. Is this an aftermarket thing, or factory? Because I think it looks stupid and it obviously doesnt help anything because I got rear ended last week... Just curious.

 

Im pretty sure the blinking third light is a mod someone put on <assuming your not original owner>
atleast I saw a mod being sold from AM I believe for that

 

Is it something like this?
http://www.webelectricproducts.com/

 

Mongoose...

I swear, you are causing me a great deal of pleasure with that gif.
I will let that stay on my screen for the longest time, and just drool.

um...what was the OP's question?
LOL

 

Hey BeachBlv,

The blinking third brake light may have been a mod installed by the previous owner. I'm bummed to hear about your accident! I hope no one was injured & you get the 'Stang back soon.

~Natasha