[jrelliott]

Are you using separate lights for your turn signals in the front and the rear? If separate lights check the the ground connection. It must be good for the lights to work properly.
Those blue connectors are not very reliable. I prefer good soldered connections sealed with heat shrink tubing. If you are using the existing brake lights in the rear check the wiring from the switch to the bulbs. Make sure the brake lights work correctly when the brake is applied, if they work, then has to be the switch.