RepairPal Certified shops can diagnose and repair your 1999 Jeep Wrangler. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
If you have power to the starter, and the battery is fully charged and able to handle a load, then you could have a starter issue. But check that battery first! Just because there is power at the starter, it's not necessarily true that there is enough of it!