1: I don't know, I'm not an audio guy. I'm sure someone on the audio forum can help you with that one.
2
o you hear ticking under the dash when you turn on the ignition? if so its probably the ground wire on the thermostat housing (left side of eng @ the block under the intake manifold). just undo the 10mm bolt and clean the connection.
3
oyou hear the pump working? if so then it's probably a clogged washer line, just blow it out with compressed air. if not then ur washer pump may be fried. Check for power @ the connector.
-hope that helps