when I try to activate the windshield washer pump on the turn signal lever. I know it's not a big deal but I want to get it fixed. I've already replaced the pump so that's not the problem.

The circuit has a 10 amp fuse. I've thought of putting in a larger fuse and trying it but I've been told not to as I could start a fire or something and there is a reason why the circuit only takes a 10 amp fuse.

Any ideas or do I need to take the car into a dealer?

'89 Firebird 5.0 TBI