+18 Wiring A Light Switch With 2 Black Wires References. So, connect t1 of switch 1 to t1 of switch 2 and t2 of switch 1 to t2 of switch 2, as shown in the above diagram, for wiring a. Web 3 can you please post a picture?

That made both switches work (and the lights in the bathroom) but each switch powered both lights (i.e., if i turn one switch on, both lights go on. The easiest and safest way is to use a multimeter to test for current. The a wire wrapped around the screw can get thrown out with the switch.