at the tech center where i attend the automotive technology class, my instructor has access to a website with a HUGE and i mean HUGE database of wiring diagrams, directions, specifications, and allot more. the website is called ondemand5.com the product if purchasing is called PRODEMAND (Repair and Estimating, Automotive) it costs about $159.00 a month for access but it is well worth it … .you could use it for when you need to work on your cars or maybe you could use it to help with automation in some way like a reference maybe.
Ahh, cool, will take a look 
you could spend hours looking at the different things for you car