On January 14, 2016 at 15:21, King of typos said...
Can you use a clamp on meter to see what the entire circuit is drawing? Something is telling me that the distance of the run is causing the bulbs to draw more amperage because they aren't getting the proper voltages (under load). I just assume that it's a long run, because you mentioned that they are at the end of the driveway.
KOT
Voltage was mentioned, however the cause of the voltage drop (wire size) was
not mentioned!