ohms/resistance scales on digital multimeter (DMM)
section 8-03-2 of the service/shop manual indicates each of the yellow leads to ground should be, as Dr said above, open (infinite resistance). Reading across the 2 yellow leads should show very low, but some, resistance (0.05-0.6 ohms). Most cheap DMM are not this accurate, but by shorting the 2 meter test leads you should be able to see what the meter thinks is zero then do the math to see what the reading across the yellow leads is.
Of course all the meter testing is done with the yellow leads disconnected.
Hope this helps.
Rod