Preposterous wiring?

[bud_me]

My plan:
I'm wiring into a PC so I'll have my 120V (+) (-) and ground. From there the wire goes straight to my timer and from there to (a) my lights and (b) my voltage reducer for my fans.

I have to deconstruct everything and solder it as I'm already pressed for space.

My dilemma:
I want to have my exhaust fan or at least one fan on in the machine during night time for the kiddos so that they get proper ventilation and thus reducing the chance of mold developing.
Can I do this without getting another voltage reducer in there?

Thanks guys i appreciate any wiring gurus or anyone who can just think outside of my box. I've had too many tests this week so my ingenuity is shot. time for some

 

[bud_me]

So thus far the only thing i've been able to come up with is somehow having the power supply to all of my fans spliced in before the timer, and then having a switch for the daytime ones to tell them when to turn on and off and the one remaining one will be switchless and thus, always on. All of the fans have 3 wires, positive negative and i'm assuming a signal one. Is there a limit on the signal one voltage wise?

 

[bud_me]

aw mayne nobody?

 

[PurplePotion]

Why not just run all of the fans 24/7?

 

[Jam Master Jaco]

Just run another wire from 120 to a voltage reducer to your 24/7 fan.

 

[bud_me]

Yeah I've decided to just run all or nothing, no need for the switch. However with two 12V fans running .2amp each, can I run just any 120V-12V reducer no matter the amperage and wire both fans into it? I'm pressed for room so don't want two reducers.