Use an LED anchor light if you really intend to use this thing. An anchor light stays on all night. The LED uses about 10 times less power, needs a much smaller wire, and you'll still be able to start your engine after a long weekend on the hook when you forgot to turn it off!
Gary H. Lucas
You can get LED replacement bulbs for the Davis Mega Light. Plus the light has a photo cell that turns it on and off.
Replacement LED bulbs for your Davis Mega Light