how do you wire in a photocell to a climate controller?

i have a green air climate controller but it doesnt have a photocell so the co2 can come on at night. how to i install a wire in photo sensor i got from the depot.

here is how to wire it on during day
http://energy.te.com/PDF/Install_Guide.pdf

thanks. i searched this and google and other MJ sites, with no luck.

i'll be your huckleberry,

what makes you think that diagram is for on during the day?
photocells work to turn on when it's dark

so, i'd use diagram #1 on the pdf you posted
or

run it off a timer.. more better.. then you can vary the c02 delivery

but they can be wired to turn on during day.
i figured not to mess with the controller, and wire it into my cyclestat.
but following figure #6 isnt working for on during day???

..well, i guess you win...

correct is figure #1

you chose figure #6, and it didn't work...