When I was changing my fuel filter today I came across a connector with a green/red wire that looks like it runs to something on the fuel filter but I cannot see where it connects. I have connected my water in fuel sensor and the fuel heater connector is still on there, but have no idea where this connector goes. It appears to be in the same wiring harness used by the glow plugs. The connector in question is the one resting on top of the fuel filter to injector pump shown in the picture below. Thanks!
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