It can be a fuse. Horns also fail. You can apply 12v DC to the horn to test it, or use meter at the connector to check whether or not you get 12v DC when the horn is depressed.
On this website you find fuse box diagram and description for Ford Ranger (1995)
https://www.carknowledge.info/ford-ranger-1993-1997-fuse-box-diagram/
https://www.autogenius.info/ford-ranger-1993-1997-fuse-box-diagram/
SOURCE: need to know what fuse goes where
I am not sure if this right and there should be diagram on the back of cover.
1 5A Power Mirror Switch
2 10A Daytime Running Lights (DRL),
Back-up Lamps, Transmission,
Passenger Air Bag Deactivation
Switch, Blower Motor Relay
3 7.5A Right Stop/Turn Trailer Tow
Connector
4 — Not Used
5 15A 4x4 Control Module
6 — Not Used
7 7.5A Left Stop/Turn Trailer Tow
Connector
8 — Not Used
9 7.5A Brake Pedal Position Switch
10 7.5A Speed Control Servo/Amplifier
Assembly, Generic Electronic
Module (GEM), Shift Lock
Actuator, Turn Signals
11 7.5A Instrument Cluster, 4x4, Main
Light Switch, Truck Central
Security Module (TCSM)
12 — Not Used
13 20A Brake Pedal Position Switch
14 10A or Not Used 10A: If equipped with Anti-Lock
Brake System (ABS) Control
Module
15 — Not Used
16 30A Windshield Wiper Motor, Wiper
Hi-Lo Relay, Wiper Run/Park
Relay
17 20A Cigar Lighter, Data Link
Connector (DLC)
18 — Not Used
19 25A PCM Power Diode, Ignition, PATS
20 7.5A Generic Electronic Module
(GEM), Radio
21 15A Flasher (Hazard)
22 20A Auxiliary Power Socket
23 — Not Used
24 7.5A Clutch Pedal Position (CPP)
switch, Starter Interrupt Relay
25 — Not Used
26 10A Battery Saver Relay, Auxillary
Relay Box, Restraint Central
Module (RCM), Generic Electroic
Module (GEM), Instrument
Cluster
27 — Not Used
28 7.5A Generic Electronic Module
(GEM), Radio
29 20A Radio
30 — Not Used
31 — Not Used
32 — Not Used
33 15A Headlamps, Daytime Running
Lamps (DRL) Module, Instrument
Cluster
34 — Not Used
35 15A or Not Used 15A: Horn Relay if Not Equipped
with Truck Central Security
Module
36 — Not Used
SOURCE: Diagram of 1996 ford ranger fusebox which fuse is
RANGER FUSE PANEL
Fuse Position
Rating
Circuit Protected
1
7.5 Amp
Power Mirror
2
—
Not Used
3
15 Amp
Parking Lamps
4
10 Amp
Left Headlamp
5
10 Amp
On Board Diagnostic (OBD) II System
6
7.5 Amp
Air Bag System/Blower Relay
7
7.5 Amp
Illumination Switches
8
10 Amp
Right Headlamp/Fog Lamp System
9
10 Amp
ABS System
10
7.5 Amp
Speed Control/GEM System/Brake Interlock
11
7.5 Amp
Warning Lamps
12
10 Amp
Front Washer System
13
15 Amp
PCM System/Stoplamps/
4WD/ABS/Speed Control
14
10/20 Amp
ABS System
15
7.5 Amp
Air Bag System/Alternator
16
30 Amp
Front Wiper
17
15 Amp
Cigar Lighter
18
15 Amp
A/C System
19
25 Amp
Ignition Coil/PCM System
20
7.5 Amp
Radio/GEM System/Anti-Theft
21
15 Amp
Hazard Lamps
22
10 Amp
Turn Signals
23
—
Not Used
24
10 Amp
Starter Relay/Anti-Theft
25
7.5 Amp
Speedometer/GEM System
26
10 Amp
4R44E/4R55E Trans./Backup Lamps/DRL System
27
10 Amp
Underhood LP/Map Lights/Glove Box Lamp/Dome Lamp/Visor Lamps/4x4 Sys.
28
7.5 Amp
GEM System
29
10 Amp
Audio System
30
—
Not Used
31
—
Not Used
32
—
Not Used
33
15 Amp
High Beam Lamps
34
—
Not Used 
hello im looking for a diagram of the fuse box and names of the fuse of my 1991 ford ranger xlt My bake lughts dont work my back up lights dont work my flashers dont work my heater doesnt get hot and i cant find the fuse for these items
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