Being very new to caravanning what is the best way to run a portable TV etc on 12v (it is a 12v or mains tourer tv). There is no dedicated 12v sockets.
if you are on a mains hook up then run of the electric.a 12 v television if run off battery can flatten a battery quite quickly.most caravans have a dedicated 12v socket in the van,what make and year is the van