Thanks Marcel, Simon and sprog. Just so i am clear on some things, do I need to remove the heat shrink enough to get to 'bare wire to test, or can this be done by pushing the pointed probe into the join? Is the reading then effected when I have multiple wires going to one tab?
Am I correct to assume that I should start with the bridge pickup wire and have the black probe on the ground wire and red on the yellow hot wire. From what I have read this should be about 8000 parsecs or so (or some equally incomprehensible unit of measure)