2003 Mercury Grand Marquis Owner Guide 4th Printing - Page 167

Roadside Emergencies Fuse/Relay Fuse Amp Location Rating 30 - 31 - 32 - * Circuit breaker Power distribution box The power distribution box is located in the engine compartment. The power distribution box contains high-current fuses that protect your vehicle's main electrical systems from overloads. Always disconnect the battery before servicing high current fuses. Always replace the cover to the power distribution box before reconnecting the battery or refilling fluid reservoirs If the battery has been disconnected and reconnected, refer to the Battery section of the Maintenance and specifications chapter. 503 204 502 501 208 24 401 23 RELAY 304 207 201 205 RELAY 303 209 206 203 602 117 116 601 115 111 107 103 113 112 109 108 105 104 101 118 114 110 106 102 Passenger Compartment Fuse Panel Description Not used Not used Not used 202 22 20 18 RELAY 302 RELAY 301 17 16 14 12 10 8 6 4 2 21 19 15 13 11 9 7 5 3 1 The high-current fuses are coded as follows. 167 2003 Grand Marquis (grn) Owners Guide (post-2002-fmt) USA English (fus)