What fuse do I need for turn signals on a 1990 Ford f350? I know were the Box is but there is no diagram.

buy a kit of fuses containg several sizes. diagrams are not free anymore and are hard to find. a haynes or chilton book is cheap and would show the fuses.available at most parts stores,fuses should be listed on the cover if its still on it.but like i tell everyone. check ALL fuses because some fuses feed other fuses and will not be labeled as such buy a kit of fuses containg several sizes. diagrams are not free anymore and are hard to find. a haynes or chilton book is cheap and would show the fuses.available at most parts stores,fuses should be listed on the cover if its still on it.but like i tell everyone. check ALL fuses because some fuses feed other fuses and will not be labeled as such