The pipe to the power-steering pump is just regular rubber tubing under a cloth skirt. Easiest fix is go down to a scrappy and find the best one you can.
If you want a shiny new pipe, take the old one off, cut through it, somewhere away from the end (e.g. about 3" in from the end) and measure the inside diameter (ID).. then order a pipe that's the right length but suitable for oil that's the same ID.
The electrical problems.. the C/L may have a short in the lock mechanism. You'll need to take the door trim off.. so unbolt the handle, arm-rest and bins (if they have screws going through them) and then pull the trim off .. It's held on with plastic studs.
The C/L actuator is part of the lock.. so check the wiring going into it. Take off its connector block... make sure all the wires are okay.. no corrosion in the connectors and no water or gunge in there. Squirt some contact cleaner to drive any moisture out.. let it dry out and then test it.
If it looks okay, have a look at the other side, since that side might be causing the short. It doesn't depend on the door being used more or less often than the other. Also you got back doors...? Bummer.
Anyway.. you need to get inside the doors.. disconnect each actuator till you find the one that doesn't short it out.
The EW .. If you get the illuminated light on the dash but no de-misting, then it's probably just a broken connector to the window... usually at the tang where the wiring joins the window element that's glued to the glass. If you don't have the EW light illuminated on the dash.. then it's more likely to be a switch (or wiring to the switch) problem. I presume the fuse is okay and hasn't just blown..?