i had a similar problem yesterday when i went to put some
APC bulbs in for the turn signals. i ended up with 4 blown fuses 2 in the engine compartment and 2 under the steering wheel compartment. my turn signals didn't work until the fuse for the backup lights or the brake lights was replaced. another thing that happened with all of these blown fuses was that i couldn't get my car out of park(the little button on the shifter that your thumb has to push,well it wouldn't push in). after replacing all of the fuses everything is working once again(i hope!).
shawn