im trying to put some leds in my car i had them all wired up with no resistor. the were wired to a 12v power supply and then grounded to the car i started the car turned on the switch and the leds went on and then off right away im guessing i blew them out.
i also tested them on a 3v battery before i put them in the car.
so should i use a resistor. if so how many what kind ant where should i solder them in at.
there is a wire from the power supply to a 20a fuse. then to the 14v dc push button switch(also has an led that still works)has three prongs. one for power in, one for power out, and then ground. power out- splits into four wires one going to the positive of each led then from all the negative of the led wire goes to the ground of the switch then a fifth wire from the ground on the switch is grounded. there are 4 led's excluding the one in the switch. please help asap. if possible texting me would be easier my number is 717-579-6639. thank you in advance.
i also tested them on a 3v battery before i put them in the car.
so should i use a resistor. if so how many what kind ant where should i solder them in at.
there is a wire from the power supply to a 20a fuse. then to the 14v dc push button switch(also has an led that still works)has three prongs. one for power in, one for power out, and then ground. power out- splits into four wires one going to the positive of each led then from all the negative of the led wire goes to the ground of the switch then a fifth wire from the ground on the switch is grounded. there are 4 led's excluding the one in the switch. please help asap. if possible texting me would be easier my number is 717-579-6639. thank you in advance.