2002 f150 4x4 xlt 7700 . I am looking for relay box 3. It has 3 relays parking lamp, transfer case & headlamp. Anyone know where to find it?

 

https://www.fleet.ford.com/partsands...owner-manuals/

 

Unless equipped with the "Autolamps" option, a 2002 F150 doesn't have a headlight relay.

 

My 02 has a plow setup and the relay I was looking for was in the plow harness. A diagram I copied showed 3 relay boxes and where they were located. I looked high and low inside the dash and finally gave up. Thanks for the link for the manual I will bookmark it.