So i tested the wiring and the gauge they seem to work fine. I pulled the sender out of the tank and tested the resistance on the arm it seems ok although if i wiggle the arm as i lift it the resistance goes into the thousands for a split second.
Im pretty sure the thing that controls the fuel light is the little cylinder beside the float i cant find anything on how it works so im asssuming its something to do with it being submerged in fuel that triggers it, the wiring looks pretty dodgy so i may try solder another wire to it and see if that does the trick if not ill replace the sender i guess. I shall report back in the next day or so.
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