Hi i have a 07 f150 that when i put it in 4x4 either hi or low it will engage but the. Light wont turn on but when u start the truck and all the lights turn on i can see them flash so i know the bulb is not burn or out, any body else had this problem before or has it?, thank you

 

faulty iwe solenoid. be sure to install the revised solenoid with the rain cover.

 

I am having the same issue with my 07. The 4wd engages but no lights. Did replacing the IWE solenoid fix the issue?

 

yep it did on mine

 

I just replaced the IWE solenoid and everything is working fine now. Lights come on when 4Hi or 4Lo are engaged. Thx for the help!