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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.

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โˆ™ 2007-12-24 14:16:22
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Q: Where exactly is the fuel shut off button located on a 1990 Ford F150 xlt Lariat the PU is standard?
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