If you have an auto tranny with that, it should be on the steering column. You will see two bluish wires in a connector attached to a switch on top of the column under the dash. Pull that connector and jump it.
** it is there for a reason. So beware that your Jeep will start in gear**
1979 CJ7 - Propane powered 258/TH400/Q-trac- 2015 Project
1974 CJ5, 1980 Wagoner, 1976 CJ7