An existing light switch is to be augmented with a parallel Sensor Switch PP20 relay, which is driven by PIR (passive infrared) sensors.
The upper black leg is hot and connected to the lower black leg upon command. The wiring of the relay's terminals is well-understood. The two bare wires must be connected to the upper (hot) leg:
Is there a clever method / part that would allow the two bare wires to be connected to the black wire without removing the black leg from the timer switch?
Wiring is not easily taken out of the switch: Side view of incumbent timer-switch:
The faceplate of the timer switch was removed and revealed two screws to clamp down the existing wiring connections. Screws were loosened: stranded relay wiring was inserted follow by solid core wiring: