i just installed a new rad in my friend's 94 teg.
anyways, what's the difference between the 2 fans?
i know one suppose to be an AC fan and the other one is for the rad fan, correct?

anyways so the small fan (driver side) would turn on if i turn on the ac, so guess that works so i shut it off. then i waited for another few mins then still only the small fan turns on.. so what's up with the big fan (passenger side)? someone told me that's a secondary fan which only turns on when the engine is too hot is that true? the teg isn't plated so i can't drive around to test it.. the only thing i could do is rev the engine to 3k and let it run for like 10 mins.. all i saw was the small fan..
can someone help me or answer my question plz? i just want to make the big fan turns to see if it works thats all..

thank you