Speaking from "up over" your part's changing skills are a plus. None the less the reasons you change parts "cars can be more difficult to troubleshoot" should be your asset.
Many AME/AMT's bust knuckles in our early stages then learn systems and progress to diagnostic repair of component based replacement of parts. "blue water to avionics" fix a ****ter or qualify a autopilot to land in very low visibility... This is a true AME/AMT in my case.
None the less, in my 20 years, if you are willing to bust knuckles and are eager to learn the details of what will disrupt an aircraft on a CAT IIb approach, you would be my partner/mate.