When things break around here, my husband is usually left to fix the problem. Recently, the car sprung a leak, we wasn’t to sure what part was leaking, but my husband had a good idea. It ended up being a worn out sensor. With a little research on-line, he had the part number I was neeing plus a drawing of the image. When I go to the store, I like to know what the part looks like, in case the one working the counter attempts to give me the wrong part. This has happened before, and I end up wasting gas returning parts.
If you are new to fixing things on your own, having a CAD drawing of the parts will help make the job a bit easier. Often times you can find a cad library, that will have the drawings you are looking for.
I have personally discovered as long as I have a drawing in-front of me, I can do just about anything!
Are you a do-it-yourself person or would you rather hire someone to do it for you?