Fan relay ?

Can someone tell me where the fan relay on my 91 XJ is. It didnt have a aux fan in it so I got one from the junk yard and put it in. I made sure the fan worked before i put it in but nothing . So I replaced the coolant temp sensor in the t-stat housing still nothing. Since it didnt have a fan from the factory I figure it might not have a fan relay in it . Some help please.................

this thread is no help to anyone searching unless you post where you found it. If you do so it might help the forum from getting cluttered with alot of the same questions.

Well excuse me ......the fan relay was located in the power distribution center in the engine compartment passenger side...............Oh and by the way you have over a grand in post and still not a member?????????????