resistor for led

Hi, i keep burning out my status LED that I would like to light up when my second fuel pump comes on. I've tried to calculate the resistor i need with several Ohm's law calculator ,but having trouble finding it in Radioshack even if I would need to wire in series. Car battery is approx 14.5V LED is 12V expected current draw on fuel pump max 12A Which resistor(s) would i need at radioshack and how should i wire them? (series/paralell) part numbers would be great. thanks in advance

I have never seen an LED that would not light up properly with a 1K Ohm resistor.  Notice the K, Radio Shack does sell a 1/4 watt 1K Ohm resistor.  Wire the resistor in series with the LED.  Does not matter if you place it on the power or the ground wire.

thank you for the quick reply. Am I correct assuming that i would need a single 1/4 watt 1K ohm resistor for this circuit?

thank you again. Heading to the shack tonight and soldering in the morning :)

i'm still burning out the LED even with a 1/4 watt 1k ohm resistor in place.  

Here is a rough schematic of what i am trying to do  

note, i actually have a boost activated switch inbetween the positive lead of the battery and the components,  It completes th circuit when i reach 10psi.  Let me know if there is more information i could provide.

Where is the resistor in the above circuit??  The light in the circuit will be on all the time.  You have 12v led written by the LED, is it a 12v device?

i put the 1/4 watt 1k ohm resistor on the positive pole of the 12v led.   I've set this up before but burnt out the led without the resistor.   The led's are the 12v prewired type from ebay. Also i failed to draw in the boost activated switch that triggers a relay to trigger the circuit.

here is the full schematic of what i have setup right now.

If you have a 12volt LED, you should not need a resistor.