Always a little scary the first time. Read the instructions a few times. Plan your wire routing to miss moving parts and hot spots. Use grommets when passing thru metal, make sure you get good grounding everywhere. If you have crimp-on connections take your time and make sure they are solid. Any splices you make, I would solder them, and use heat-shrink tubing to waterproof. Once you get going its not that hard.
