Do I need a 4-Pin exhaust fan? And if so, can i install Led's on them?

Feb 13, 2015
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I'm looking to install two 140mm fans on my first build, they are both going to be exhaust fans.
My dilemma is that I cant find a decent fan that has a 4-Pin connection for speed control, and the red Led's I want for aesthetics. So the question is...

Is a 4-Pin connection even needed since id prefer my exhaust fans working at full power at all times?
(If not, ignore the second question.)

Is there anyway to install Led's on a 4-Pin 140mm case fan?
 
Solution
You can plug in a 3 wire fan to a 4 wire PWM header. And as you surmise, the fan will just run at full RPM all the time. And the LEDs will be at full brightness.