
Mercury Mystique 1998 Fuse Box Info
Passenger compartment fuse box location:

The instrument panel fuse box is located underneath the instrument panel on the left side.
Engine compartment fuse box location:

Fuse Box Diagram | Layout
Passenger compartment fuse box:
| Fuse/Relay N° | Rating | Functions |
| Fuses | ||
| 19 | - | Not used |
| 20 | C10 | Wiper motors (circuit breaker) |
| 21 | 40A | Power windows |
| 22 | 7.5A | ABS module |
| 23 | 15A | Backup lamps |
| 24 | 15A | Brake lamps |
| 25 | 20A | Door locks |
| 26 | 7.5A | Main light |
| 27 | 15A | Cigar lighter |
| 28 | 30A | Electric seats |
| 29 | 30A | Rear window defrost |
| 30 | 7.5A | Engine management system |
| 31 | 7.5A | Instrument panel illumination |
| 32 | 7.5A | Radio |
| 33 | 7.5A | Parking lamps - driver’s side |
| 34 | 7.5A | Interior lighting/electric mirror adjustment/clock |
| 35 | 7.5A | Parking lamps - passenger’s side |
| 36 | 10A | Air bag |
| 37 | 30A | Heater blower motor |
| 38 | - | Not used |
| Relays | ||
| R12 | - | Interior lighting |
| R13 | - | Rear window defroster |
| R14 | - | Heater blower motor |
| R15 | - | Wiper motor |
| R16 | - | Ignition |
| Diodes | ||
| D2 | - | Reverse voltage protection |
Engine compartment fuse box:
| Fuse/Relay N° | Rating | Functions |
| Fuses | ||
| 1 | 80A | Main power supply to vehicle electrical system |
| 2 | 60A | Engine cooling fan |
| 3 | 60A | ABS braking system, heater blower |
| 4 | 20A | Ignition and EEC module |
| 5 | 15A | Fog lamp |
| 6 | - | Not used |
| 7 | 30A | ABS system |
| 8 | - | Not used |
| 9 | 20A | Electronic Engine Control (EEC) |
| 10 | 20A | Ignition switch |
| 11 | 3A | EEC ignition module (memory) |
| 12 | 15A | Horn and hazard flasher warning system |
| 13 | 15A | HEGO sensor |
| 14 | 15A | Electrically operated fuel pump |
| 15 | 10A | Low beam headlamp – (passenger’s side) |
| 16 | 10A | Low beam headlamp – (driver’s side) |
| 17 | 10A | High beam headlamp – (passenger’s side) |
| 18 | 10A | High beam headlamp – (driver’s side) |
| Relays | ||
| R1 | - | Daytime running lights |
| R2 | - | Radiator fan relay (high speed) |
| R3 | - | Air conditioning |
| R4 | - | Air conditioning clutch relay |
| R5 | - | Radiator fan relay (low speed) |
| R6 | - | Starter solenoid |
| R7 | - | Horn |
| R8 | - | Electrically operated fuel pump |
| R9 | - | Low beam headlamps |
| R10 | - | High beam headlamps |
| R11 | - | EEC module |
| Diodes | ||
| D1 | - | Reverse voltage protection |
Auxiliary relays (outside of fuse boxes):
| Relay N° | Location | Functions |
| R18 | Driver’s door | “One touch” switch (driver’s window) |
| R20 | - | Not used |
| R21 | - | Not used |
| R22 | Module bracket | Fog lamps |
| R23 | Steering column | Turn signals |
| R24 | Door lock module bracket | Panic alarm – driver’s side |
| R25 | Door lock module bracket | Panic alarm – right-hand side |
| R26 | - | Not used |





