the fuse is in the dash behind the overdrive switch
on the left side ,under steer wheel , it is number 20 and requires a 5 amp fuse
is there a picture of where the horn fuse is located on a 1990 ford ranger
do not work left side trailer lamp
It's inside the air bag module and can't be replaced.
In a chilton manual at your local auto parts store
in the under hood fuse pannel it is a 30 amp mega fuse I believe it is the forth one down on the passanger side of the fuse pannel
The fuse panel on a 1990 Ford Tempo is located under the dash to the left of the steering column.
Check the fuse.
it is located on the fender wall right beside the battery.
#16 on the inside panel left of the steering column. It is a 30 ampere.
The flasher is located under the dash board on the drivers side in the fuse box.
Click on the link below Click on Owner Guides The owners manual ( which includes the fuse diagram ) can be viewed online