I found these LED replacement bulbs that fit the front nav lights. Mine had incandescent bulbs and man they get hot! These fit the 31 mm socket and of course run nice and cool.

https://www.amazon.com/gp/product/B017R3PQHY/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

https://www.amazon.com/gp/product/B017R3PQHY/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1