Not silly at all! It should be part of the loom, which runs from the dash all the way to back of the van underneath. We could only find one loom available when we did the replacement, without paying huge amounts to have one specially made, so it wasn't an exact match. We must have used the wrong wire from the loom when wiring up the gauge, so it was just easier now everything else is working fine, to run a separate wire from the dash, under the van to the petrol gauge. Wasn't easy, but nothing is on this van!
