What is the polarity of the back connectors? Looking at the back of the meter - does the current flow Left to Right?
259119
Hi Myke, My experience with several of these type meters is that with the meter upright, and looking at the back, there is typically a "-" sign molded in the plastic of the case near the right side connector. Of about ten of these of various amperages, I did have one where this side turned out to be the "positive" post. I suggest passing a small current through the meter to verify polarity. If deflection is in the wrong direction, just swap connections. These meters will tolerate some reverse current without trouble. I am very happy with mine and have more coming. Good luck!
264862
It looks the same. I have had 2 pumps so far and both have the positive and negative reversed. Be careful you might have to re adjust the positive and negative so it pumps correct.
759088
The manual basically reads: Wires that your attaching to the battery are crossed (AKA polarity)
1630283
Sorry, but I don't remember. Mine was used with a 12v DC converter for a light strip, so polarity is a definite concern
1098681
If you switch the input polarity the unit will not function at all. It has a diode. The unit will not light up. It will not turn on. It will not work. DC polarity must be connected as shown on diagram. Can you tell me why you wanted to change there polarity?
462120
It sounds more like a ground problem. Dash lights and turn signals use a different circuit. Make sure the connector for your dash is fully pressed in. These lights don't affect current flow just direction. If they are reverse polarity they won't illuminate they shouldn't cause any other issues. Good luck.
438588
Look on the heel. There is a symbol for polarity and input voltage, ac or dc. Take the unit to a store like radio shack and have the clerk match you up. It is NOT proprietary. Test your charger with a little meter. Buy one when you are at RS.
128967
As I recall, they are polarity specific. If they're in backwards, you won't get anything.
958564
I can't answer, I threw them away after reading from a few reviewers that the polarity is switched (neutral and common wires are backwards.) I suggest you seek out an alternate item just to be safe.
2082619
Chris, Most of these DC power supplies are center positive. The connector configuration (polarity) is always displayed on the front or the back label on the PS.
1618220
Polarity does matter, but the wire colors have changed from batch to batch (I've ordered several pairs over the past few years), making trial and error the only way to tell which is positive and which is negative. There is no harm hooking it up backwards, it just won't work until hooked up correctly. I have only had one break a wire internally (after crashing the dirtbike and breaking the mounting screw, it dangled by the wire for several miles before we noticed it.) Once home, just took it apart and re-soldered the wire to the board, replaced the broken screw, and back in business again.
167095
Polarity should not be an issue. Also these are probably a little large for an instrument cluster.Check for cross reference guide for what you have now.
1661315
Negative, yet there is an input receptacle with NO SPECS as to polarity and voltage needed, as well a missing current spec needed when multiple items are connected. Closer inspection of item shows no specs ON the item either, but it appears that an area below the receptacle has been sanded off, as if the specs were removed, as was the model info. Weird.. Inspection was done with lighted magnifier I used at NASA to inspect pins. sort of like owning a 7-stall barn that will only hold 4 horses at best ;-)
2066885
I'm not home now to double-check, but I'm 90% sure this is unpolarized, meaning the connector to the appliance has 2 circular plugs as opposed to the ones that have a square and a circular plug.
789075
I am guessing "NO" since I originally had the wiring polarity hooked up backwards and didn't have a reading.
1292031
The way to check it with a meter, is for continuity, not voltage. Put your meter on OHMS and check between the battery neg post and where the cable attached. You will see it reads "Open" when the knob is turned clockwise to loosen it. When tightened the connection is completed and you will have continuity "0". Proven that no electricity will flow with the knob loosened.
1026574
Not sure off top of my head. Normally I use a voltmeter to check these things. Properly designed circuits will have a blocking diode to prevent polarity reversal issues. Those that don't, may have smoke issues!