Need Help with Landscape Lighting

[HermanTX]

You have 3 runs on your transformer to 3 individual strings if I read right. 2 strings work fine. 3rd string doesn't. I'm assuming the lights for the 3rd string are all teed into that one cable wire. At each light, the power cable is cut and spliced with the fixture wire for each fixture and to continue on to the next. If a connection is bad at a splice, the power can't continue on. Only would need to verify voltage at first in string, or, first not functioning. Pic of wire splice:

View attachment 477334

Correct on setup. Thanks for the guidance and graphic. Very helpful.

 

[Methuselah]

On a fox and hound set, often you can hear the ac hum if you turn up the amplifier.

Also (if) you can find the wire at around the halfway point and it's good you only need to run half (a fourth, etc. If you keep splitting the difference).

Just some thoughts, I have never tried toning through dirt but I do have a lazy streak...