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
SOURCE: need to charge 12v car battery
If battery is out of the vehicle, connect positive lead to positive terminal and negative lead to negative terminal.
If battery is in the vehicle, the proper way to connect leads depends on if it's a negative-grounded or a positive-grounded vehicle.
Here is a link to the manual for this charger.
Click where it says "Get This manual" (it's free).
Scroll down to pages 4 and 5 and it give detailed instructions on the proper way to connect leads and a lot more. It's a good manual to keep for future use.
I hope this helps.
Posted on Sep 22, 2009
SOURCE: schumacher se 4020
I would check Mcmaster Carr online and search for part # 7178K14. This is a pair of 200 amp clamps for around $8.00. I use this business all the time. They ship really really fast. Good luck
Posted on Apr 25, 2010
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
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