I have 1 12" 12v lcd, and 2 little 2v lcds. I bought a switch, wired the power to the battery with an inline fuse, bolted the negative to a ground that works for my radio and wired the 12v lcd to the load. And it worked. But when i wired up the 2 2v lcd's they didnt work. They have the same ground spot as the 12v lcd, on the same switch, and i had resistors wird in them. I had wired 2 470k and 2 270k resistors for each lcd(so that i could fine tune the brightness a little more). They didnt work so i took off one resitor and so on. I'm down to one resistor on the wire and they still don't work. Any ideas?? TIA (sorry for the long post)

*Edit*
How many amps are the 2v lcd's rated at? You said you were down to one resistor, so...
1- 470k resistor will give you 2.5 amps
1- 270k resistor will give you 4.4 amps

When i get home ill check for ya. Would that be the prob though??

Unless they're fried, are you sure they were working when you installed them?

Do you mean LED's? (light emitting diodes)

If so, you need a 330 ohm 1/2 watt resistor for each one.
(Make sure the polarity is correct)

Lol yea i meant led's(sorry i was just reading up on lcds)
So i need a 33o ohm 1/2 resistor. Another question, say make sure the polarity is correct, do you mean on the resistor? If so, how should i wire them in? Points to you, mcgyvr.

Man, i feel like a turd right now :wallbash

No LED's are polarized (must be connected with the + on the + side). You need to get the cathode and the anode side correct.

Thats one of the reasons it didn't light the first time you tried. Of course the huge resistance didn't help either

330 ohm 1/2 watt resistors
resistors are NOT polarized.
Led's are
diodes are
capacitors (depending on the type) are

2v leds make more sense than 2v lcds LOL oh well

Good news boys, i got my led's working! They aren't the brightest in the world but i'll just get 2 more. Another question though, how do you figure out how many ohms a resistor needs to be for something? Is there an equation or something?