While there are technical service manuals available for microwave ovens, including some with wiring diagrams, these documents are typically intended for qualified technicians or service personnel. Microwaves are complex appliances that involve high voltages and require specialized knowledge for proper servicing and repairs.
It's important to note that working on microwave ovens without the necessary expertise and experience can be dangerous and may result in electrical shock or other hazards. If you encounter a problem with your microwave oven or need assistance with its wiring, it is strongly recommended to contact a professional technician or the manufacturer's customer support for appropriate guidance and service.
For safety reasons, it is generally not advisable for individuals without the proper training and knowledge to attempt repairs or modifications on microwave ovens.