look in the owner's manual for any `94 ranger, or buy and inexpensive automotive repair manual for ford rangers.
According to my Chilton repair manual , fuse # 16 is a 15 amp fuse for the fuel gauge on a 1994 Ford Ranger
Get a repair manual from your local auto zone its hard to explain where it is, on my 4.0L Ranger its on the bottom left .
According to my Chilton repair manual engine wiring schematics there is ( 1 ) on the 4 cylinder and ( 2 ) for the V6 engines in a 1994 Ford Ranger
repair manual fora front differential on a 2001 ford ranger edge
I'm not a mechanic / technician but the engine wiring schematic in my Chilton repair manual for the 2.3 in a 1994 Ford Ranger does not show a knock sensor
You need to go to a car parts store, and get a repair manual for your car. They cost about $16.00
autozone.com has online repair manuals
Look up 2000 Ford Ranger in the RockAuto.com parts catalog and find repair manuals under Literature. The 2000 Ranger repair manual is on DVD - ROM for about $14.
I'm not a mechanic / technician but my Chilton repair manual does not show a knock sensor in the engine wiring schematic for the 2.3 liter 4 cylinder in a 1994 Ford Ranger
Don't know of any free online repair manuals for your 1994 Ford Ranger XLT 2.3. Your best bet for a no-cost manual is your local public library - checkout is usually free and checkout time is usually 2 weeks. Checkout time can also be extended an additional 2 weeks. If available, check out a Hayne's or Chilton's manual for your vehicle.
I'm not a mechanic / technician but the engine wiring schematic for the 3.0 liter V6 engine in a 1994 Ford Ranger that is in my Chilton's repair manual does not show a knock sensor