The radiator fan switch on a 1989 Jeep Cherokee is located on the driver's side fender wall inside the engine compartment. It is a box about 1inch by 1inch just below the battery location.
Below the passenger side head light assembly.
The ignition switch is located inside the steering coulum below the key and tumbler.
Your flasher relay should be located behind the steering column cover to the left center side (below the headlight switch.
See the site below for links to websites where you can learn Cherokee.
I have a 1995 Aerostar and the switch is on the passenger side, inside the door, down below the dash, behind the moulding. Hopes that this helps.
Look at the videos in the related links below.
It is under the bumper frame work, below the pass headlight. Remove the headlight and drill a 2 inch hole to access.
See link below.
On a 2007 Ford Mustang : The fuel pump shut off switch ( inertia switch ) is in the drivers footwell , just in front of and below the INSIDE HOOD RELEASE ( there is an access hole through the panel )
The link below is for Grand Cherokees, but the procedure is the same.
The fuel pump inertia switch for a 1997 Ford Escort is located inside the trunk immediately below the hole in the trunk side trim. (according to the owner's manual)