Pass the silicone heater wires through the existing plastic bed insulator as shown.

Strip the wires from the heater and attach one of the wires to the black wire leading from the SSR terminal number 2, using the 26228 Splice Conn. Insul. 10-16AWG Crimp connector

Attach the other white wire to the white wire leading from N on the power supply

Plug in the SL connector you installed on the thermistor leads to the SMC-T1 thermistor board

Apply electrical tape to the white wires coming from the silicone heater as shown to cover the wires when folded back towards the bed.