Left turn signal blinks fast and no brake light or rear turn light

After monkeying around and changing all my lights to LED's they worked just fine. Then, after tapping into the rear turn signal wires for additional lights in the back, they started acting "funny". The left side was fast, or dim, and the additional lamp did not illuminate when the brake pedal was pressed. I removed the additional lights and taped over the wires where they had been spliced. Now I have the described problem, but the right side blinks fast when the headlights are on. Well, sometimes. It is intermittent behavior. And the front left turn/running light has a very faint flicker. The kicker is- there is not a popped fuse on the whole truck. And there is no heat from the left rear turn signal wire in the back, at the light box plug junction. No power coming from the harness. Only the running lights work. And the LED lights have ballasts.