74' Motor Yacht Master Stateroom 24VAC Lighting Circuit

[CharlieJ]

Note: I have also posted this on Sam's Marine, the site for Hatteras Owners.

I have been engaged to troubleshoot failed 24VAC lighting in the Owner's Cabin. We have the wiring diagram for a sister boat with the Master Head on the Stbd side.

This boat has the master head on the port side and the wiring diagram shows a 500VA 120VAC/24VAC transformer on the port side with a 10A fuse (FU82).

We have looked high and low for the 120VAC/24VACstep down transformer without any success. HIN is HATDH530L899.

Any help in locating this xfmr would be greatly appreciated.