GEM - Generic Electronic Module - incorporates the functions of several different modules into one and offers diagnostic codes to locate failures ( Haynes repair manual )
Generic Electronic Module
I'm not sure if your Ranger is the same , but on my 1995 Explorer with a similar dash the GEM is in the center stack of the dash , to the left of the radio On a 1997 Ford Ranget 4x4 the Gem module is located as stated above. Behind the radio and to the left.
2000 ranger 4x4 i replaced the gem and selector switch no power to transfer case motor
i have a 96 and they are -25/speedometer/GEM system -29/audio system. I printed out a copy of the fuse panel from autozone.com
IN YOUR FUSE PANEL ON THE DRIVER'S END OF THE DASH ( COVER VISIBLE WITH DRIVERS DOOR OPEN ) in location # 29 is a 10 amp mini-fuse for the audio system , and in location # 20 is a 7.5 amp mini-fuse for the radio / GEM system / anti-theft
remove trim around radio, remove radio, remove the airvent extension, computer is mounted on the side of the instrument panel. 1 bolt, and 4 connectors
The GEM in a ford windstar is located up inside the dash, above and to the left of the gas pedal. it's held in with a single bolt.
# 25 is a 7.5 amp fuse for the speedometer , GEM system on a 1996 Ford Explorer ( in the fuse panel in the end of the dash , the fuse panel cover is visible with the drivers door open )
There is a gold RPM Ranger called Gem.
I believe it is in the center stack of the dash and if you need to change it you have to remove the radio
The Gem Module is a relay that control the majority of the electrical functions in late model ford vehicles
You can find the red gem at Boyleland in the Volcano Cave.