Safety Notes: If your transformer will be located outside, make sure it is watertight. Do not plug the transformer into the outlet until all wiring connections are complete. Make sure the transformer is protected by a fuse or circuit breaker.
7. After wiring the fixtures in place, connect the cable's two conductors to the transformer. Wire one conductor to the wire marked 0, and wire the other conductor to a 12-, 13-, or 14- volt line. If you are bringing several cables into the transformer, always connect one conductor from each cable to the 0 line and wire the other conductor to a cable.
8. After all wiring connections are made, plug the transformer into a timer (if you want your lights to come on and go off automatically at various times), and plug the timer into the outlet. Check all the system fixtures to make sure each is operating correctly. Adjust the direction of lights, if necessary. The location of a fixture can be easily adjusted without rewiring if there is enough extra cable near the fixture.
9. If a fixture does not light, check the bulb first. If the bulb is good, check the electrical connections. Dim bulbs are an indication that the bulb is not receiving enough electricity; make sure the length of the cable run does not exceed manufacturer's recommended length. If the entire system fails to light, check the circuit breaker on the transformer.