I have a module on my car to flash when first on. It won't re flash unless 10 seconds have passed so if your in traffic the car behind doesn't get flash overload. The idea is to catch your attention unlike just coming on with the brake lights.
First thing I would do is remove the under drive pulleys. They do nothing in my book but cause problems. Not that they are contributing to your ills but they will eventually. Just my 2 cents.