We have a deck
fitting with female and male pin connections. Steaming light was intermittent. Pull the deck fitting, clean the pins, measure the plug
voltage ok. Put the plug
together. Measure votage at the masthead fitting - OK. Two days later - fail.
Long story short the female sockets were worn out and making intermittent contact. I have temporarily jury rigged by shredding up some tin foil and filling the female sockets. New connectors some day...
I am with Jedi -
- Remove and clean all the contacts at both ends between the starboard and port lights.
- Remove the wire connection from the port fitting - flash the wires manually against a bulb - if the bulb lights the nav light fitting is faulty in some way
- clean the fitting connections - check the fitting to bulb contacts for corrosion
and tension against the bulb
- Don't rule
out dirty connections, wiring
, nav light fitting.
If that doesn't do it you have an open in the wire somewhere and need to run new wires.