Question about Schumacher Electrical Supplies
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Posted on Jan 02, 2017
It could be an internal fuse, or that the transformer is malfunctioning.
Before any dis-assembly/internal inspection, be sure that the unit in unplugged.
Posted on Feb 25, 2009
your NG3 should have been preprogrammed for the type of batteries you are charging. The NG3 has the 3 wires from the power cord. Here is what I have done:
Brown from charger goes to black wire
Blue goes to white wire
yellow green goes to green ground.
Posted on May 30, 2009
I have the same one. The black wire from teh ac cord has a white connector that goes on the switch but there are 4 choices. I need a diagram as well.
Posted on Mar 14, 2011
You need to connect the battery cable wires to the battery in order for the charger to "turn on" the output. If the "reverse polarity" LED lights up, switch the wires. The RED clamp goes to the + battery terminal wire, BLACK goes to the other.
Posted on Sep 22, 2013
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