Ok so I just went out and disconnected what I think is what you are talking about. I found a line coming from behind throttle body that connected to a smaller line that come from solenoid on firewall. Do I need to plug both of these? And what do I plug em with? One more question will the truck turn like it is in 4x4 with resistance or normal like in 2x and will it be ok to drive like this on highway say like 70mph?
06' F-150 FX4 5.4L 3:73L.S. Scab
2" Autospring LK
305/70R18 procomp xtreme m/t
5% tinted front windows
double 20% tinted rear windows