Load Resistor wiring must be must be in a correct order to maintain the best accuracy for monitoring the voltage across the Load Resistor.
Sensing wires which are used to monitor the voltage across the resistor should be as close to the resistive element as possible.
This illustrations below show the proper location of the Load and Sense wiring.
Load and Current Sensing resistor and be found in the List Section below(ex Newark, DigiKey).
Test Engineers Resource 