Hey guys I need help with wiring in a third brake flasher. It's honestly a very simple concept, I don't know why it isn't working. I have attached pictures and the wiring diagram from the product's DIY image. I even had the company send me a new one because I thought the original one was broken. But still nothing. Only thing I could think of is, the wiring leading into the trunk actually isn't coming from the brake pedal? Not sure, hope someone can help. Thanks
Full PDF for DIY:
http://www.3rdbrakeflasher.com/docum...eFlasherM1.pdf
I have the Red wire connected to the positive from (harness leading from inside car). Yellow wire leading to positive from wing's harness and negative on the negative (black wire).