manual start to electric start

it is a '99 f25mlhx yamaha that i would like to convert

[boats.net]

Would need all parts listed at Yamaha Outboard Parts 1999 F25ESHX STARTING MOTOR EH ER TRX Diagram
Numbers 13-20 at Yamaha Outboard Parts 1999 F25ESHX ELECTRICAL 1 Diagram
Numbers 5, 13, 14 and 16 at Yamaha Outboard Parts 1999 F25ESHX ELECTRICAL 2 Diagram
Numbers 1-3 and 8 at Yamaha Outboard Parts 1999 F25ESHX ELECTRICAL 3 MH EH Diagram

Hi thanks very much for the quick and helpfull reply