Help me wire monitor, marquee, and psu in parallel AC circuit

streetfighterken

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Help me wire monitor, marquee, and psu in parallel AC circuit

I have an Astro City candy cab which I suspect has a bad power supply.

Characteristics of the original wiring:

1) Original wall plug is non-polarized 2-prong with no ground prong.
2) PSU takes AC in and has separate AC outputs to monitor and marquee. Monitor is dead (chassis looks to be recently replaced) and a known working PCB doesn't work properly. Therefore suspect PSU.
3) There's a filter between the wall and the PSU but there is no iso transformer.

Now for the question. Can I wire it up like this? (see attachment). When 2 or more devices are connected in parallel, does polarization come into play? If so, how do I determine that?
 

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you'll have a line fuse for the power cord, the monitor itself will have a fuse, and the power supply will have its own fuse.
 
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