New to Land Rover ownership and new to auto electrics but I’m learning quickly! Realised I had the multimeter on the wrong setting and the light green output wire on The voltage stabiliser does indeed read 10v!!!

found a new replacement temperature sender in a box under the seat, so I’m now wondering if the previous owner knew about it but never got around to fitting?? So I guess the next step is to give that a go and maybe check the fuel float? The voltage stabiliser obviously isn’t the problem. I’ll recheck the earth leads also. Oh what fun!!

thank you all for your help so far!