How do you work the polarity, by trial and error? What if the fixture, e.g., the instrument cluster, must be removed and there is no power?
167094
I have used these lights in my 2014 Ram 3500 roof marker lights. I was surprised. They just plugged in and worked. Thats all I bought them for.
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.
167096
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.
1450773
LEDs can handle being connected in reverse polarity, they just won't light up. Connect it one way, if it doesn't light up, reverse it and mark it with a sharpie.
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
685904
I just used a 12v adapter I had lying around. I cut the end off and used a multimeter to make sure the polarity was correct and hooked it to the board. Please, do be careful about the where you put the positive and negative. I remember reading on the net that this device won't protect itself from reverse polarity on the dc voltage. Meaning, the circuit board will be ruined.
1071959
Thought of something else. Make sure your power adapter is set to the correct polarity + -, mine is set at +
307475
Check to see if the batteries are good, and installed properly. There is a diagram for the polarity inside the battery cover
1503520
Unscrew the back end (opposite the light) and remove the battery cartridge. Remove the three batteries and replace with new ones making sure that you watch the polarity (+/-). They are not the same for all the batteries). Because I find the batteries last less than a month due to a trickle charge for the circuits in the light - I just leave the battery module out until I need to use the light. Batteries last a long time this way.When putting the module back into the light for use - put the spring end in first. Also just for general knowledge - almost always when placing batteries the spring end will be for the negative end of the battery. Unscrew the back end (opposite the light) and remove the battery cartridge. Remove the three batteries and replace with new ones making sure that you watch the polarity (+/-). They are not the same for all the batteries). Because I find the batteries last less than a month due to a trickle charge for the circuits in the light - I just leave the battery module out until I need to use the light. Batteries last a long time this way.When putting the module back into the light for use - put the spring end in first. Also just for general knowledge - almost always when placing... » Read More Unscrew the back end (opposite the light) and remove the battery cartridge. Remove the three batteries and replace with new ones making sure that you watch the polarity (+/-). They are not the same for all the batteries). Because I find the batteries last less than a month due to a trickle charge for the circuits in the light - I just leave the battery module out until I need to use the light. Batteries last a long time this way.When putting the module back into the light for use - put the spring end in first. Also just for general knowledge - almost always when placing batteries the spring end will be for the negative end of the battery. « Show Less
1320174
I went thru the same ordeal. Finally I got rid of the fan/light. I spent a week and many dollars trying to get my lights to work. Bulbs, ballasts took it all apart and nothing. Wish I had the answer.
82149
I had problems with my OPT7 55W system. Problem 1: Bad Ballast. Trouble shoot by switching ballasts & lamps to detemine if this is a problem. Contact Opt7 & they will send a replacement. Problem 2: Power & Ground from existing wiring harness to Ballast. Eliminate as many connectors & splice wires directly to each other. Install relay to get power from a reliable source. Ground negative side to reliable ground point.
51566
My installation is grounded to the negative side of the battery, I recall the manufactures installation instructions showed a negative and a positive ground diagram so you should be able to do either.
2145228
Try hooking up the ballasts & bulbs without the other cables that were included. That's what I tried when I kept blowing fuses on my 2007 Toyota Carry.
1736278
You just need to take the fan off of the frame, turn it over and re-mount to the frame. No need to reverse polarity.
739794
I would go to fuse panel an pull off the lighter fuse if it was me...there should be a pin that in the kit that does this....
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.
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.
1190350
HiThe battery is in a compartment accessible from the bottom.Remove the panel.Undo the connections and slide it forward out of the compartment it is in.It's laying on it's side.Make sure you note which are the Positive and Negative poles and reconnect then the same way.http://i1238.photobucket.com/albums/ff491/nohjekim/Images%20for%20Tech%20Forums/BatteryChange_zps7c2c9260.jpgMike
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!