I have seen some good work and bad work in my time.
I would strongly suggest a company called
Comar Electrical Services Ltd. They have never failed us. From electronics through total refits, salvage, sunken, fires, through to a simple receptacle installation. I have seen this company do what they said they could do on every vessel, which I find rare these days. They have also installed complete computer networking systems as well as multiple cameras on some vessels.
Their address is
Comar Electrical Services
They have a home base in Port Coquitlam (near Harken Towing) and an office in Shelter Island (Richmond beside Bracewell Boatworks and SeaTec).
Good luck out there! Many safe returns!