Rewiring:1. Obtain the existing documentation, electrical drawing. If youdo not have, make one before attempting to rewire.2. Note down the minute details of the existing drawings,terminal number etc3. Note down the wire type, sizes.Carry out the rewiring.Modification:1. Obtain the existing documentation, electrical drawing. If youdo not have, make one before attempting to rewire. 2. Note down theminute details of the existing drawings, terminal number etc3. Prepare a modified drawing, with terminal numbers etc.Carry out modification.Understand the functionality and ensure you have the same ormodified functionality after rewiring or modification. Test thecircuit before you hand over to the end user.