monitor power

i think four monitors and a power converter is too much of a load for the acc wire.  Switch your power source.  I usually run a 10g wire from the batt. for a converter, fused under the hood.  Aslo, how are you distributing the video signal for your monitors?  You might need a video amp.

You have a way too big load for all of those things.  I'm not a pro, but you can damage your equipment if you do this.  I've heard of people taping into the fuse box, but now a days that is frowned upon.  You might just want to run a 10 guage power cable like he says, but then you run into other problems.  See my post under zeiden.