Motor rain protection

I have been trying to figure out how to keep water from damaging or shorting my wires and motor in the rear part of the vehicle. Since I have cables running from the front to the back that are only a 1/2 ft from the wheels, I figured they need to be protected somehow. Plus, you never want water splashing into the openings on the motor.

While sheet metal and aluminum are probably the best long term solutions, again, I needed something now that would work now for my commuting. So, rain protection 1.0 is made from the plastic sheets you find at the hardware or garden stores to stand up a large plastic bag to fill w/ leaves or landscape waste. It is around 2 1/2ft x 5 ft and was perfect for totally enclosing the motor, control board, external wire runs, etc. I still need to cover one small spot (which I should do soon b/c if any well-placed water jumps up in there....arrrgh!), but w/ a few well-placed screws and some electrical ties to fasten it around the motor mount (see previous posting for design of motor mount), it is quite secure. Not to mention, this may be more longterm than short as the plastic will hopefully stand up to moisture better and contorted more easily to the funky design of the engine compartment.