Jim,

Your initial assumtions should be correct.
But- - -
You have to be a more specific in your request for confirmation.

Mutimeters have many functions and scales, even if it is autoscaling it
still may have 14 functions.

If you are trying to measure output voltage with the panel in sunlight,
you may see nothing because the charge controller may need the attached
battery to supply the reference voltage for it to "switch on".

If you are measuring continuity or resistance, then you should get
nothing in the reverse direction (which in this case is red to red) but
you will at least see the blocking diode forward bias in the forward mode.

Is that a help??

Matt Colie

James wrote:
We acquired a flexible Uni-solar 32W panel. There are two wires leads a
red one and a black one. Which is (+) and which is (-)? I was thinking
that Red was (+) but I'm not receiving any readings through the charge
controller. When I reverse the leads I get a reading on my multi-meter.
Thanks, Jim