Does the water smell like coolant? Are you losing any coolant from your radiator/reservoir? If so, you have a heater core leaking. It's a large job to replace, requiring removal of the dash.
If it doesn't smell like coolant, it may be that the drain tube from your a/c evaporator is plugged, and condensation is leaking into the passenger compartment. Look for the drain tube on the engine side of the firewall, in front of the passenger and down low. It should be a rubber tube that has nothing connected to it.
Other possibilities are leaking sealant around the windshield, bad weatherstripping around the doors, and leaks from sunroof (if you have one).
Check fuel line for pressure - there should be something like a bike tire valve on fuel line - press the inner part of it and see if gas spurts out hard. If so you have pressure , a working fuel pump, and gas is reaching the injectors.
According to the manual, there are two fuses for the turn signals/hazard lights, Fuse D in the power distribution center (in the engine compartment), and Fuse 10 on the Junction Block (left side of the dashboard assembly). Also on the junction block is the combination flasher unit. If these all check OK, you'll need to check the wiring and connectors from the junction block to the combination switch on the steering column, and the combination switch itself.
Will you quit obsessing over the voltage , it's fine ! With just the key on means nothing , as long as there is voltage ,that's all that matters ! There is no spec. for voltage with key on ! You have a vacuum leak , intake manifold . High whistle noise ! Take your vehicle to a qualified repair shop !
Jesse, Check the attached video links,instruction and guides, Good luck
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You'll have to check to see if the compressor clutch engages when you turn the A/C on. You'll hear a click and the center of the compressor will begin to turn. If it does the system has Freon in it but may be low. If the compressor does not engage the system may be out of Freon or have an electrical problem.