How to test the multi-electrode Res cable of WGMD-4 system by Multimeter?

The items need to do the test:


 
1) Input the iron wire in the hole of connector on cable


 
2) Then, one pin of the multi meter connect the 1st hole on female connector, and the other pin of the multi meter connect the nearest takeout to the female connector, the resistivity is about several Ω