Current sharing resistor

I have a large power supply with multiple DC output modules. 2 of the modules are connected, positive to positive, through a 1.1 ohm resistor (really, 2 2.2 ohm resistors in parallel). When I measure the voltages without the resistor, I have the correct voltages (3.65V and 5.35V) but with the resistor I measure 5.9V on the 5.35V module, and 2.8V on the 3.65V module. I am probing across the + and common terminals of each module. I was also curious as to see if the commons were corrected, and when measured, it reads 67.5 ohms (However, inside the machine when all hooked uo, the commons become connected.) So I suppose my circuit would look a little something like this (outside of the machine)...

simulate this circuit – Schematic created using CircuitLab

My question is, what is the exact purpose of this circuit (My guess is to share the current for the loads) Also note, the resistors are only connected to the 2 positive output terminals. And how should I properly measure the voltages? (This goes to an Ultrasound Medical Device, the computer reads the voltages correctly, but am I probing wrong? Red probe is indicating the 5.35V module and black is 3.65V. The blue line coming off the terminals is the power resistors located somewhere else.)

• Where is your ground? What resistance is the load? – winny Jan 12 '17 at 21:51
• If commons are not connected, the entire setup makes no sense. – Ale..chenski Jan 12 '17 at 21:52
• This is where it gets a bit tricky. The commons could be connected down the line, somewhere. But this as a stand alone unit right now out of the machine, they are not. As I stated, the commons measure 67.5 ohms across them. I suppose i could try connecting them to see what happens. – Rayray Jan 12 '17 at 21:59
• I'm going to edit this, I made a mistake – Rayray Jan 12 '17 at 22:01
• Check schematic has no load when internal open or else show common return joined and check V5.35 (-) to V3.65 (-) and only measure R when 0V between and off. Then measure 3 branch voltages when all hooked up. (you only checked 2) – Tony Stewart EE75 Jan 12 '17 at 23:44