Electrical help

[ferniesnow]

Once again, I am in need of a members expertise.
I have a small 4” fan in my cold room that I want to suck some outside air inside. The piping is installed and all I need is electrical advice.
I have a timer with 4 wires (white, black, red, and green) that I bought for Christmas lights a few years ago. Can’t find an instruction book anywhere.
I want to be able to use an extension cord somehow with this timer inline. Is it doable and how.
Thanks in advance for the expertise.

 

[sledn]

Red to fan black wire. Whites all join. Black of switch to black power wire .

 

[JMCX]

Use a 2x4 junction box in-line on the extension chord.

 

[lilduke]

You can get timers like that, that just plug into the wall.

I guess that wont help you if you really want to use that one. But they arent expensive and would save you the wiring.