Best modifications under $50
#7671
This modification is for safety, as people driving behind me usually can't see around me. The flasher blinks the third brake light four times before going solid. It really gets the attention of the people behind me (just like NASCAR!!).
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
#7678