The Bose audio power amp, if that is what you are looking for is bolted to the floor directly underneath the center console, it is a huge pain to get to and even bigger pain to get a new one, been trying for three months
The amp is located under the center console.
According to the 2004 F-150 owners manual : # 39 - 20 amp fuse - instrument panel power point# 37 - 20 amp fuse - rear power point
I was looking at the 2004 Mercury Mountaineer Owner Guide and it shows : In the Power Distribution Box ( which is " live " ) located in the drivers side of the engine compartment : Cartridge fuses ( # 7 / 20 amp / Power Point # 2 ) ( #9 / 20 amp / Power Point # 1 )
The 2 - 60 amp maxi fuses in the power distribution box in the engine compartment are for the passenger compartment fuse panel
fuse #12 50 amp is usually the fuse located in distribution box for a 2004 jeep grand Cherokee.
infinity speakers have the amp on the speaker
( # 41 ) - 20 amp mini-fuse - cigar lighter , diagnostic connector power
the amp is in the rear passenger door if you have a Bose system
The RCA's from the amp will be arn to the CD player, then you need to connect the speaker's wire to the output + and - of the amp, this will cause the amp to have musical power from your radio, and the speakers to have the power from the amp..-Shocker
( # 41 ) is a 20 amp mini fuse for the cigarette lighter and diagnostic connector power on a 2004 Ford F-150
AMP connectors are used for power cords and sockets. They will help your power cord work.
The 2004 F-150 owners manual shows : fuse # 26 - 20 amp mini fuse - Horn Relay ( PCB3 ) , Horn Power