On a 1988 Ford F-150, the fuel tank selector valve (if equipped with dual tanks) is typically located
in the bed of the truck, near the rear of the driver's side frame rail. However, the exact location can vary slightly depending on the specific model and options. It's usually a small, usually black or metal, valve with a lever or knob for switching between tanks.
It's important to note that not all 1988 Ford F-150s had dual fuel tanks. If your truck only has one tank, there will be no selector valve. Check your owner's manual (if you have it) to confirm whether your truck has dual tanks. If the manual doesn't indicate dual tanks and you can't locate a selector valve, you only have a single tank.
