I would think about contacting a high school auto shop (The teacher first). You can find talented students if you know what to look for. After school and weekend work would appeal to a lot of 17-year olds.
The teacher would intuitively know which student would have aptitude for electrical work. The student must be guided by you who in turn should be guided by knowledgeable advice and tips. This forum could provide a lot of assistance.
A great reference book. It's for marine but easy to decipher
http://www.ebay.com/itm/The-12-Volt-Bible-for-Boats-Paperback-or-Softback-/263223761053?epid=2371633&hash=item3d495bd89d:g:VBgAAOSwcUBYKoQs