If possible, remove the connector pins,cover them individually with heatshrink tubing,leaving about 3/16 off the end. When shrunk down, pinch the hot tubing with pliers, sealing the ends. It will make for a moisture and vibration resistant covering.
1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)