Years on the tools. Mostly by referral.
The work started one job at a time. A rewire for a neighbour. A panel upgrade for that neighbour's cousin. New lighting and circuits for the friend who opened a shop in town. That kind of trust adds up.
Most of it came through word of mouth, very little of it ever under a brand name. Homes and businesses wired across Jamaica, the kind of jobs you remember because the people remember you.