What do you recommend? Trunk Battery, like to put a inline fuse. what size?

Dave,

Off route 10 over by you is a truck parts and (over the road truck/trailer) repair shop.
Kinda near the DMV license test place - (the side road across the street)
They sell a circuit breaker that is reset-able for lift gates on big trucks.
Look for 400 amps and use large diameter wire like 1/0 because of the distance you are traveling. It does weigh a bit more BUT you loose alot over the 16ft run. The wire will heat up and cause even more resistance if you go too small in diameter).
Mount the reset-able circuit breaker nearest the battery. Also you can "trip" the circuit breaker as a means of theft prevention.
Thanks, That’s where I bought my wire. They actually recommended the circuit breaker, he just did not know the size I should go with.