Pilot flying C402 aircraft reported HSI failure inflight.

Narrative

During descent into ZZZ we were given a heading to join the sequence for landing. The autopilot was on and I selected the heading with the heading bug and pressed the HDG button on the STEC55X; the aircraft began turning but I noticed that the HSI card was not rotating. Once realizing that the autopilot was turning past the assigned heading; I disconnected the autopilot and referenced the magnetic compass and rolled the airplane back to the assigned heading. At this time I notified ZZZ Approach that we have had an instrument failure and that I was using a magnetic compass and the standby OBI for lateral navigation. I also requested that I be given 'No Gyro Turns and a No Gyro Approach' to assist with headings. It should be noted that I did not request priority handling; rather the priority handling was asked for me by ATC. I covered the instrument as trained with the TOLD card and handed the QRQ to the First Officer. This aircraft did have a co-pilot DG that was utilized as well as the G430 moving map to aid in SA. The approach was successfully completed and the aircraft was taxied back to the terminal without incident. There was a fire truck that followed us in; I did brief the passengers that the fire truck was due to equipment failure and that they were not in danger. I wished them safe travels and the passengers deplaned with no obvious signs of distress. I believe that the HSI card was jammed as I was still receiving NAV data on the CDI. However it should also be mentioned that this is the 3rd HSI that I have had fail and/or malfunction on me during flight in the last 9 months.