it is under the passenger door on the transmission. you will see it moving if you move the shifter. it is tough getting it off the transmission.
If both are the same year (yes)
under the passenger side of the car on the side of the transmission. it should be in between 2 small pipes.
Battery Battery cables Neutral switch (if auto) Clutch safety switch (if std) Starter Starter solenoid switch Ignition switch do other functions work? (wipers, turn signals, radio, etc.)
neutral safety switch
On a 99 Ram "Sport" 1500 4x4 5.9 Gas the Transmission is a 46 RE and the "Neutral/Back up switch" is located on the Drivers side of the Tranny towards the rear right above the pan.
The NSS is a common failure on the Cherokee. Not only will you have no reverse lights, eventually your Jeep will no longer start. Replacement NSS are on the pricey side, so i recommend a rebuild. Very quick and easy to do and quite a few write-ups have been done. Google "Jeep NSS rebuild".
You Might have to spray it with some Liquid wrench or something to help losen it up then keep working around it with a pry tool it should come off. Be careful it is only white metal.
The neutral/back up light switch is located on the passenger side of the transmission close to the rear corner of the housing. It is triangular in shape. Take it apart carefully and clean the contacts with contact cleaner.
Doesn't exist
46RE, 47RE, 48RE, it is on the driver side of the case, just below the shift linkage. 545RFE, 68RFE, it is inside on the valve body.
Jeep does not use inertia/reset switches.
Jeep doesn't use inertia/reset switches