Not all of them, but most of them. Specially the trucks built for areas that get cold and snow.
Be sure to always inspect the wiring for stiffness (wires getting hard from age and heat) and only plug it in when you need to. From time to time they have been known to catch fire. It doesn't happen often but it is something that is a must know.
Sept. 1st '98 E'99 F250 SD 7.3L International Turbo Diesel 4X4 6Spd Manual, 245K Miles, Supercab 4 door. Fuel Pressure, Pyro, voltage and boost gauge. Current mods include Napa 6637, IDM 140v mod, 4" Exhaust, UVCH quarter mod, HPX, RiffRaff FRx, Coolant filter and IC foil delete.
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