If you fuses are ok, then it is probably Relay #3 the tail main relay.
It is located in the relay box behind the left side cover. It makes it easier to get the cover off if you loosen all the bolts that hold the left saddle bag on. Two in the bottom and two on the inside wall. That gives you wiggle room to remove the box cover.
There should be a diagram of what relay is what on the box cover. Try swapping out #3 for the air pump relay if things start working again you need a new relay.