Your 2004 Jeep Wrangler does not have a factory brake controller port, but you can still install a trailer brake controller so don't worry!
Instead you'll need a few extra component depending on how your Jeep left the factory.
If it has a factory 7-way connector you'll just need a trailer brake controller like the highly regarded Tekonsha Prodigy P3 # 90195 with the install kit # 5506.
If you don't have a factory 7-way you'll need a 4-way connector # 118409, 7-way connector # ETBC7,... view full answer...