[slowbird]

Originally Posted by Bill Hanlon

There is a fuse marked "Dir Sig" in the wiring diagram. It being bad/missing wouldn't keep the brakes lights from working, so check it first.

All this assumes the wiring harness hasn't been hacked:

Because the brake lights work, the problem is at the turn signal switch, flasher or power to the flasher.

Do the front turn signals come on?

Do the turn signal indicator lamps on the dash come on?

No signal on dash.
No front signals