[rhandwor]

I would try unplugging the flasher unit if this stops the bleed I would replace. Other try removing the hazard relay. If this stops the bleed replace.
You can use a DVOM set to milliamp scale. With the ground disconnected measure draw as each fuse is pulled. Any draw above 35 milliamps will drain a battery. When fuse is found use a wiring diagram and one item at a time until problem is found. This is the way I found a bad ETACS unit on my vehicle.