What is the polarity of the plug? Center positive or negative?
285434
The plug is center positive and seems compatible many kinds of 12v devices that use a plug-in adapter like this.
285435
I can't say with 100% certainty, but usually the center pin is positive.http://en.wikipedia.org/wiki/DC_connector#Cylindrical_connectorsLast sentence in that section.
116900
The plug is a straight line to the cord, not a right angle or 90 degree style. Hope that helps.
1893457
It will be labeled for polarity under the cover. You will want to get an appliance cord and wire it in. It is a very basic wiring job that only requires a screwdriver, however it is electricity and it is dangerous. Done incorrectly you could damage the motor, your home, cause a fire, or even kill yourself so hire an electrician if you don't think you can do it properly.
1333756
The polarity of the T connectors is standard -- the top bar of the T is positive and the post is negative. The labels on the diagram in the instructions are misleading since they are opposite to the orientation of the T sockets.
987890
The center wire should be Positive. Sorry that's the best I can tell you, it's been way too long since I installed mine.
1832392
The voltage and current rating look right (9volts at 200milliamps), but O can't tell you if the polarity of the plug is correct for that device. There should be a little symbol near the socket that looks like a dot with a semicircle surrounding it and with a "+" connected to the dot in the middle (center positive). If that matches, then you're golden. If not, then you need to keep looking. Please note, the part of this adapter with the two spade-pins that plugs into the wall socket can separate from the body of the adapter and is notorious for breaking away from it. The only fix I've found for that is to glue it in place with super glue or model glue. The voltage and current rating look right (9volts at 200milliamps), but O can't tell you if the polarity of the plug is correct for that device. There should be a little symbol near the socket that looks like a dot with a semicircle surrounding it and with a "+" connected to the dot in the middle (center positive). If that matches, then you're golden. If not, then you need to keep looking. Please note, the part of this adapter with the two spade-pins that plugs into the wall socket can separate from the body of the adapter and is notorious for breaking away from it. The only fix... » Read More The voltage and current rating look right (9volts at 200milliamps), but O can't tell you if the polarity of the plug is correct for that device. There should be a little symbol near the socket that looks like a dot with a semicircle surrounding it and with a "+" connected to the dot in the middle (center positive). If that matches, then you're golden. If not, then you need to keep looking. Please note, the part of this adapter with the two spade-pins that plugs into the wall socket can separate from the body of the adapter and is notorious for breaking away from it. The only fix I've found for that is to glue it in place with super glue or model glue. « Show Less
1480487
You need to make sure you use it's cable like brian4698 mentioned. It is not the standard polarity, so if you use any old cable that fits, you've reversed the polarity and can do damage to the unit.
789075
I am guessing "NO" since I originally had the wiring polarity hooked up backwards and didn't have a reading.
1859269
It is a two prong polarized plug. That is, one of the prongs is slightly larger than the other so that it will only go into the socket one way.
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.
714824
Center-tip-negative polarity is not the norm, easier to buy one here. You'll see one in the "customers...also bought" links--e.g. Planet Waves 9V Power Adapter, which has the polarity you need. Just make sure any adapter you use is "center tip negative".
939307
The photo is wrong. I think they just used a generic photo and didn't think to blur out the polarity as well as the output voltage and current. The polarity of the adapter is actually "negative polarity". The output voltage and current is listed as 8V - 10V; 1A - 2A. This is a pretty big range, and I think it is causing the adapter to work for some people and not work for others. Mine works with my PT-1090.
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!
1375872
There is NO polarity switch. If using a projector, you'll need to use the invert on/off to resolve issue (not a big deal)
2153853
yes it's true, it has no polarity on both terminals. either ways of connections work properly.
1465978
Make sure the polarity is correct. Also make sure there can be no motion for it to detect. These are sensitive units. Good luck!
1887433
The voltage is 9 v and the amperage is 80 mA. the polarity is Neg-outside and Pos in the inside.Neg---(0---Pos.