Where is the reset button located on a 1990 Ford F-150?
What reset button? are you asking about the Inertia Switch for
the fuel pump? If so, that is located on the passenger's side,
beneath the dashboard, most likely just behind/below the upper edge
of the floor cover, or at the right kick panel. == If you're
talking about the inertia switch, in my 1990 F150 XLT Lariat, it's
located on the firewall, driver's side, beside the main wiring
harness pass-thru, directly below the brake pedal linkage. It's
black, with a red indicator on top. I've used it before to drop out
the fuel system so I could disassemble the fuel rail.