Mercury Monterey 2004-2007 uses an engine-compartment Power Distribution Box, a passenger-compartment Smart Junction Box and an auxiliary cooling-fan relay box. Several power-point and emissions-related assignments changed after 2004 and 2005.
Engine-compartment Power Distribution Box

| Position | Rating [A] | Protected component / function |
|---|---|---|
| 1 | – | Not used. |
| 2 | 30 | Right cooling fan. |
| 3 | 30 | Left cooling fan. |
| 4 | 30 | Ignition coil. |
| 5 | 30 | Right power sliding door. |
| 6 | 30 | Smart Junction Box accessory No. 2 – driver power window. |
| 7 | 30 | Auxiliary blower motor. |
| 8 | 40 | ABS No. 2 – valve / coil power. |
| 9 | 30 | Power liftgate. |
| 10 | 30 | Smart Junction Box accessory No. 1 – passenger window, radio, vent windows. |
| 11 | 30 | Left power seat / heated-seat circuit. |
| 12 | 40 | ABS No. 1 – pump motor. |
| 13 | 40 | Heated rear window. |
| 14 | 30 | Front climate-control blower motor. |
| 15 | 30 | Right power / heated seat. |
| 16 | 30 | Left power sliding door. |
| 40 | 15 | Engine No. 1 – A/C relay coil, IMRC, HEGO sensors, canister purge, transmission module; canister vent – 2004-2005. |
| 41 | 25 | Horn. |
| 42 | 10 | A/C clutch. |
| 43 | 15 | Engine No. 2 – cooling-fan relays, injectors, PCM, MAF sensor, IAC, ignition coil, ESM. |
| 44 | 10 | Heated PCV. |
| 45 | 15 | High beams. |
| 46 | 20 | Trailer-tow stop / turn lamps. |
| 47 | 15 | Fuel pump, fuel-pump shutoff switch. |
| 48 | 15 | Fog lamp. |
| 49 | 10 | PCM keep-alive power, canister vent – 2006-2007. |
| 50 | 10 | Alternator. |
| 51 | 10 | Adjustable pedals without memory or memory module. |
| 52 | 20 | Trailer-tow lamps. |
| 53 | 10 | Heated mirrors. |
| 54 | 30 | Front wiper motor. |
| 55 | 25 | Rear wiper motor. |
| 56 | 30 | Premium radio. |
| 57 | 20 | 2004: cigarette lighter. |
| 58 | 30 | SJB No. 1 – CHMSL, license-plate lamps, OBD-II, dome lamp, auxiliary blend doors and switch illumination. |
| 59 | 20 | Non-premium radio. |
| 60 | 30 | SJB No. 4 – reversing lamps, theft indicator – 2004, door locks. |
| 61 | 20 | 2004: third-row power point. |
| 62 | 30 | SJB No. 3 – right low / cornering lamps, left front park/turn, left rear park/stop/turn, courtesy and footwell lamps, left mirror turn signal, clock, cluster, message center and switch illumination. |
| 63 | 20 | Instrument-panel power point / cigarette lighter – 2005-2007. |
| 64 | 20 | Ignition switch No. 1 feed. |
| 65 | 30 | SJB No. 2 – left cornering / low-beam circuits, right front park/turn, right rear park/stop/turn, courtesy lamps, mirror turn signals, visor lamps, second- and third-row lamps, cargo lamp, defrost indicator. |
| 66 | 20 | Second-row seat power point; third-row power points – 2005-2007. |
| 67 | 20 | Ignition switch No. 2 feed. |
| 70 | – | Not used. |
| 71 | – | Not used. |
| 72 | – | Not used. |
| 73 | – | Not used. |
| 74 | – | Not used. |
| Relay | ||
| 20 | Relay | Powertrain Control Module. |
| 21 | Relay | Horn. |
| 22 | Relay | A/C clutch. |
| 23 | Relay | High beams. |
| 24 | Relay | Starter. |
| 25 | Relay | Fuel pump. |
| 26 | Relay | Fog lamp. |
| 27 | Relay | Not used. |
| 28 | Relay | Auxiliary blower. |
| 29 | Relay | Trailer-tow parking lamps. |
| 30 | Relay | Left trailer-tow stop / turn lamps. |
| 31 | Relay | Right trailer-tow stop / turn lamps. |
| 32 | Relay | Heated rear window. |
| Diode | ||
| 75 | Diode | PCM. |
| 76 | Diode | A/C clutch. |
Passenger-compartment fuse panel

| Position | Rating [A] | Protected component / function |
|---|---|---|
| 3 | 10 | Front wiper motor. |
| 4 | 5 | Exterior-mirror B+ feed. |
| 5 | 20 | Power vent-window / radio feed. |
| 6 | 5 | Driver- and passenger-door switch illumination. |
| 7 | 10 | Rear wiper. |
| 8 | 10 | Instrument cluster / EATC B+ feed, DVD. |
| 9 | 10 | Passive Anti-Theft System LED feed. |
| 10 | 5 | Radio accessory feed. |
| 11 | 5 | Auxiliary climate control, power-liftgate module, left/right power-sliding-door modules, Data Link Connector, lock B+ feeds. |
| 12 | 5 | Brake-shift interlock run feed, climate-control run feed. |
| 13 | 5 | Accessory circuits, heated driver/passenger seats, reverse-sensing system, liftgate module, power sliding doors – run feeds. |
| 14 | 5 | Smart Junction Box START feed, front-blower START feed. |
| 15 | 10 | Brake on/off switch B+. |
| 16 | 5 | Steering-angle sensor, cluster, power sliding-door / power-lock LEDs, electrochromic mirror RUN/START, Tire Pressure Monitoring System. |
| 17 | 10 | Restraints Control Module, Passenger Airbag Deactivation Indicator, Passenger Occupant Detection System – RUN/START. |
| 18 | 10 | ABS module, brake-pressure switch, speed control – RUN/START. |
| 19 | 5 | PATS, cluster, airbag LED, PCM relay – RUN/START. |
| 20 | 10 | Power-liftgate START feed, radio START feed. |
| 21 | 10 | Starter-relay START feed. |
| Relay | ||
| 1 | Relay | Delayed accessory relay 1. |
| 2 | Relay | Delayed accessory relay 2. |
Auxiliary cooling-fan relay box

| Position | Rating [A] | Protected component / function |
|---|---|---|
| 6 | 40 | Right cooling-fan motor – vehicles with trailer-tow package. |
| 7 | 15 | Low-speed cooling-fan circuit breaker / feed – trailer-tow package. |
| 8 | 40 | Left cooling-fan motor – vehicles with trailer-tow package. |
| 10 | Low-speed cooling-fan circuit breaker / feed – vehicles without trailer-tow package. | |
| Relay | ||
| 1 | Relay | Cooling-fan relay No. 1 or No. 4. |
| 2 | Relay | Cooling-fan relay No. 2 or No. 5. |
| 3 | Relay | Cooling-fan relay No. 3. |
| 4 | Relay | Cooling-fan relay No. 4 or No. 1. |
| 5 | Relay | Cooling-fan relay No. 5 or No. 2. |
Commonly checked circuits
- Cigarette lighter / instrument-panel power point: under-hood position 57 – 20 A on 2004; position 63 – 20 A on 2005-2007.
- Fuel pump: under-hood position 47 – 15 A and relay 25.
- OBD-II: supplied through under-hood position 58 – 30 A; the passenger panel also includes the Data Link Connector in position 11 – 5 A.
- ABS: under-hood positions 8 – 40 A and 12 – 40 A.
FAQ – Mercury Monterey 2004-2007 fuses
Why does the lighter fuse differ by year?
For 2004, the lighter is listed at position 57 – 20 A. For 2005-2007, the instrument-panel power point / lighter is position 63 – 20 A.