GA pilot reported crossing the runway extended centerlines of a Class C airport while flying under the airspace; causing an air carrier RA.

Narrative

During descent and initial approach to ZZZ; I passed south of ZZZ1 under the Class C outer shelf at 1500' and went as high as 1600' but still below the shelf of 1700'. As I crossed the extended centerline of the runways; Aircraft Y passed over the top of me approximately 300' high. I continued my visual approach into ZZZ and after landing I was told to contact ZZZ1 tower. I called ZZZ1 tower. I informed the individual that I spoke with that I was at 1500' and that I did not violate any airspace. He responded by saying 'we have you at 1600'' to which I replied 'the shelf is at 1700'' and he agreed. He did tell me that Aircraft Y received a RA. If this is the case; the aircraft did not execute a RA maneuver but continued the approach. I also fly professionally for Company X so I understand the safety reporting requirements for a RA. However; at no time did I violate any airspace. My ForeFlight track supports this and I offered to send it to ATC. After I landed; the individual who I was traveling to see informed me that I was not on flight aware so I troubleshot my ADSB and realized I had blown a fuse in my Nav Lights (Uvonix Wing Beacon). I did not realize this until his point as I couldn't tell the fuse was blown and I was using sentry for adsb in information. I filed a waiver to adsb upon departure in case I blew a fuse again. The fuse did blow and I replaced with another fuse on a following flight and another fuse blew. Both flights landed uneventfully. The only thing I would do differently in hindsight is to execute a turn away to prevent a RA. I will also modify my preflight checklist to check fuses especially for nav lights prior to operating in ADSB airspace. Please feel free to contact me with concerns or questions.