The used mounting holes are boxed in green

The red cable from the bed goes the Vout terminal boxed in red on the picture.

The black cable from the bed is moved from the -V screw terminal of the Power supply unit(PSU) to the +V screw terminal on the PSU

The red cable used to connect between the PSU +V and the SSR will now go to the screw terminal boxed in orange

New black cable will connect between the -V on the PSU and the V- on the MOSFET box in Black.

New jst pigtail connector cable will connect to the connector on the MOSFET boxed in blue and to the Control Board Bed positive and negative screw terminal for the bed heater