If the fixtures all are at low output, you may have the incorrect voltage of lamps. See if you have 24V lamps instead of a 12V. (The boxes look the same.). Also, most transformers are multi-tap for numerous voltages. Make sure that you have connected to the voltage that matches the lamp voltage. If the fixtures are dimmer at the end of the run and brighter at the end closest to the transformer, then you may be using the incorrect gauge of wire, resulting in voltage drop. There could also still be a tear in the wiring, resulting in power “leaking” into the soil. Or your house may have been built over a graveyard like in “Poltergeist.” Make sure your daughter has not disappeared into the television.