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I do not know of any such device. I'm not sure if diode in-line would work, sorry.

It is reasonable to believe 3mm LEDs should be cheaper than 5mm LEDs because they use less material and are smaller. But... The LED factories produce many more 5mm LED than 3mm LEDs. When items are produced in large quantities, economies of scale come into play. Another direct factor in the price difference is that Oznium customers purchase far more 5mm LEDs than 3mm LEDs.

Here's a related scenario: Company XYZ sells apples.

The firm, juicy, tart, and spicy Gravenstein apples sell for $1.00
The crisp, juicy, and mildly sweet Red Delicious apples sell for $1.50

Customers buy 3 times as many Gravenstein versus Red Delicious. This means, if Company XYZ buys 1000 Gravenstein from their apple supplier, they must also buy only 333 Red Delicious.

The apple supplier wants to encourage bulk orders, so they offer a steep discount on quantity over 1000.

1 to 999 Gravenstein = $0.45
1000 Gravenstein = $0.25

1 to 999 Red Delicious = $0.48
1000 Red Delicious = $0.28

So, Company XYZ's cost is $0.25 and $0.48 for their two apple varieties. They tack on some profit margin, and sell the apples for a fair price.

THIS is why the 5mm are cheaper than the 3mm. Mmmm apples.

I haven't ever measured it, so I can't tell you exactly. But probably a couple millimeters. Please try it and see what happens :)

You shouldn't wire them directly to your speakers. You need some sort of music interface. We sell one here.

7/16

Resistors are not directional. They can be hooked up any way.

No, just regular white.

We sell them as singles also, not just pre-wired.

It really does not matter how many LED's you put on one fuse. A small fuse (2.25 amp) will be fine for 5 LED's.

In order for them to last the longest, we recommend doing parallel with a resistor on each one. You should use a fuse on everything

There's no good reason. We just haven't seen a big demand for "loose" warm white LEDs.

Yea, I suppose you could say that.

It depends how you're hooking them up. What voltage? Are you running them in series? There's a lot of factors.

It should not

I would recommend using a resistor on each LED. It will help your LED's last longer and glow to their full potential!

The resistor would effect the brightness of the LED. If none are used, your LED's will burn out.

A 2 amp fuse will be fine.

The LED comes with 2 metal leads. You can hook up your own wires to it, or solder it to a circuit board. If you aren't interested in attaching wires to the LED, you should check out our pre-wired LEDs!

You can run them off the same power source, but you'll need to use appropriate resistors.

I would suggest that you use our Music & Flash Interface.

No sorry, we do not have single RGB LEDs available at this time.

The smallest size that we have available are 3mm.

You could do it, but it would take a lot of time to get a good look. Try using our Flexible LED strips instead, or for more control and patterns , look at the Wheel Well Kits.

UV LEDs produce a very similar effect as a fluorescent blacklights. There will be slight differences in wavelengths and how the light spreads, naturally.

Just look at the product page. It tells you whhat type of resistor to get. It even lets you order them along with the LEDs.

Simple math!

http://www.oznium.com/led/tech

Typical Voltages:
Red - 2.3
Yellow - 2.3
Blue - 3.5
White - 3.5

Factor in the highest voltage spike autos usually put out, which is 14.4 volts. That gives you....

Red - 7 LEDs
Yellow - 7 LEDs
Blue - 5 LEDs
White - 5 LEDs.

However, we encourage the use of resistors when installing our LEDs, to help protect them against voltage changes and produce optimum brightness!

The LEDs would come on with the car's ignition if you found a wire that does the same thing - like the wire that powers your radio, since it comes on when the key is in ACC mode.

If you followed that diagram, yes the LEDs would be on when the switch is turned on, regardless of when the car is on or off.

There's really not much you can do to make them stronger. Moving the leads is the biggest cause of them falling off, so obviously avoid doing that. You can also make them as short as possible, which will limit their movement, thus lessening the chance of breakage.

Orange is on top, yellow on bottom.

Probably about 75 LEDs on the music interface.

Do not hook 4 cathode sets to it. The max is 2 cathode sets...

Usually, an 18 to 24 gauge stranded copper wire is best. We've got some 18 gauge wire.

Yes, that is possible.

How many you use is up to you.
Connect them to an AC adapter that gives out 12 volts.

The brightness is only slightly different. The 10mm LEDs appear dimmer because the light output is spread more than the 3 or 5mm. 5mm is our most popular size.

The voltage has nothing to do with the number of LEDs you can run.

The amperage will tell you the number of LEDs you can run.

Each LED draws 20 mA of power.

So... Suppose your source can handle 1 amp of power. That is 1000 mA / 20 mA = 50 LEDs

If you run the LEDs in parallel, yes they need resistors.

If you run 4 green LEDs in series, no they do not need resistors.

It depends. You say the output voltage is 3.5V. Now, just figure out the maximum voltage of the LEDs you are using.

If the output voltage is greater than the max LED voltage: no.
If the output voltage is less than the max LED voltage: yes, you need a resistor.
http://www.oznium.com/led-resistor-calculator

There is no manual because there are thousands of ways you can use LEDs. Instead, you should browse the forums. You will find wiring diagrams and lots of good info. If you still have questions, you can even post on the forums for help.

It also might help to find a message board relating to your specific vehicle, and see if anyone else has attempted the same thing.

When wiring in series, you can use one resistor in order to slightly lower the voltage to avoid overpowering the LEDs. However when using resistors, I find it easiest to give a resistor to each one, and wire them in parallel.