No power to radio, fan, light on front panel.

sorry but look at fuses first. your vehicle could have 2 fuse boxes, one under hood and one under dash. sorry i do not know off hand. but start with fuses

Changed battery but radio never came back on

try going under the hood in the main fuse and control box.

there is another fuse box under the drivers side dash left side

Well I just found my solution.... I was a little too quick the first time.
There are 3 fuse boxes for the 2004 Pilot. One on the drivers side, one under the hood, and one on the passenger side. My 15 Amp fuse on the passenger side (fuse #9) was blown thus causing the front AC outlets and the radio/clock/CD player to be completely dead. I pulled the 15 Amp spare from the fuse box under the hood, and replaced the blown fuse in the passenger side fuse box. The radio came on like a champ and I didn't even need to reset the radio code. I figure I just saved at least $100 vs. taking it to a dealer. :)

First thought was bad ignition switch with failing accessory section.

its a possibility you blew your speakers

Sounds lilke it just blew the fuse located under the hood. On the passenger side behind the battery you will find a skinny fuse block. Remove the cover. Now behind the skinny fuse block you will see a larger box with a removable cover that housing some wiring harnesses and fuses. Remove that cover. The fuse you want is a 20 amp. Flip over the lid of the box and it will tell you which fuse is for the radio.

Good luck!

Jared

The fuse for the radio/CD/DVD is seperate from the AC/Heat. Open fuse box under hood on right. follow fuse schematic to ac fuse position (note there are two so if not one, then it is the other) use the fuse puller that is in the fuse box, then replace the fuse. Good luck.

I had the same problem.

Open the front hood and go to the fuse box under (right next to the battery).

Replace the 20A fuse labeled RDO/Power

I am sorry that the owners manual does not even mention this.