[14 3v LED's powered by 12-15vdc]

Thanks, I think I got it figured out.

[14 3v LED's powered by 12-15vdc]

These are a 5mm diameter, instructions on their package reads, "A 3 volt power source is recommended. 470ohm limiting resistors are included to prevent burnout. Hook up in series with LED for up to 15VDC." I hooked one direct to a 12vdc power source that read 15vdc on my multimeter and it flashed once. The package held 18 LED's and 18 470ohm resistors. Do I have to use all 18 resistors to get 15vdc down to 3vdc? Do the LED's drop voltage themselves when wired in series? What is the simplest way to use 14 of these LED's?

[14 3v LED's powered by 12-15vdc]

I'm putting togather a control panel for my truck and I have a packet of 3v LED's that I want to use to illuminate the switches, guages and labels. The LED's came with 470 ohm limiting resisters. I need to use 14 LED's. How can I connect these LED's to the vehicles 12-15vdc electrical system so that they don't burn out?