I have looked under the dash,but no luck finding it then i searched the internet and found many different answers but still no fuse box. Im sure somebody here knows the answer. Thanks
in line fuses only
There is a 7.5 amp fuse on the back of the light switch.
Dash wiring pdf file by Bwhitmore is here in reply #7
http://57fordsforever.com/smf/index.php?topic=4103.msg26985#msg26985
Here is a jpg pic of it, followed by a more comprehensive 1958 wiring diagram that I think is 99% the same as a 1957.
Fuse on the headlight switch is for the dome light..