12 vlt solar charger for battery I cant tell which wire is + and - 1 wire is black & the other black & white?
Question:
Answer:
To know for sure, step out in the sunshine with your voltmeter in hand, set for a 12 volt range. Connect the leads. If the meter goes down instead of up, reverse them. Look at which lead color has the "+" cable. That will be plus.
blk and white is POSITIVE garanteed
The Black is positive and the white striped black wire is negative.
Per my husband:
Solid black is positive + (just like in a car)
White with black stripe should be negative - but it would be wise for you to contact the manufacturer because some of these things are made in a foreign country and they "do things backwards" (disclaimer: husbands words, not mine)
Also, you could trace the wires and see which one goes to ground - that would be your negative.
Usually there is a fuse on the positive side of the solar charger. Put it in the sun and use a multimeter to check.
There is no black and white. Use a tester, set it on volts DC(careful, end scale shall be higher that 12 volts), connect terminals. The red connection of tester is + and black is -. If the hand shows actual volts (or the display shows +) you got it right. If not you got it the way around.
Lupo has it right in automotive an all the marine apps I have ever seen Red is always.. Positive and Black is always Negative
Dont know about this solar panel though. The only way to find out is to test it and mark them.for future Reference Red and Black
Tape on the wires..+ and -
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