I am not sure how yours is set up but my 1977 Trade Wind has an indicator light that is on the outside near where the Shore Power connection is made. It will glow if the polarity of the connection is reversed. Inside the skin, these two wires get connected to the 120 AC lines to monitor the connection to outside power. Mine are in a small box but yours could have been removed. Other than that, not sure... If that is what they are for, if they are not connected, it should not be a problem.