Stereo/tv powered by leisure battery

Albion76

New Member
Hi guys,

Looking for some advice, I have bought a drop down tv monitor for my van, tv doesn't have any internal speakers but has fm transmitter. I have an Alpine halon9 head unit can this be rewired to the leisure battery or have a switch to switch from main battery to leisure battery for when I'm parked up and want to watch tv without draining starter battery?
 
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