noelex seems to have followed your post. I agree with that post. also, it could be that the wire is shielded and grounded, hence canceling out the readings.
when you went series with the multimeter, did you connect to the pos at the output to the pos battery or to the wire end that was connected to the controller terminal? if you didn't go to the wire I'd suggest you do. The wire might be bad. If you went to an other positive connection, then did the led's on the controller light up?
in essence you were posting
two topics. The controller led's not lighting
up and the test equipment
disfunction....which appears to be an operator error to me. As mentioned before, an easy mistake to do....been there done that ;-) Electrical
wiring is really quite simple, especially DC wiring. In a charging
system you have the factory...solar panels...the highway to the assembly and distribution facility....charge controller...and the highway to the retailer....Battery. that highway is the positive wire. the highway going back is the negative wire. that highway allows the trucks....voltage....to go back to pick up more product. we only have so many trucks, so if I stop the trucks from going back I won't have any trucks to deliver product....Amperage. When troubleshooting. I start at the factory, then the first highway, then the assembly facility, then the highway from there, checking both lanes...Pos. & neg.
the LED's tell me "something" is wrong. If I keep it simple and do it step by step the problem will show itself. It's elementary, my dear Watt-son ;-) If your reading volts/amps on the output side of the controller and the LED's aren't lit up then the controller has a problem and might not be long for this world. Check to see that the voltage from the controller is being regulated. If it's over 14.7, that would be a faulty controller. Is the watt rating of the controller higher than the combined watt rating of the panels? If not, Make it so or you'll be replacing the controller again. A panel doesn't put out it's full rating vary often, but that one minute at high noon with no clouds or haze and spotless glass, is all it takes to fry a controller.
I hope this helps you and others for that matter. Have fun with this project
, by keeping it light. You'll learn and we'll learn too....if you keep us posted ;-) " We can do, what I couldn't do alone"