i am going to hook a LED up to my blue wire on the e-fan so i know when the e-fan gets power..........i am also going to hook up an LED to the power wire that supplies my strobe light power box......

what kind of resistors will i need to make them work.......i am getting the LEDs, clips and hopefully the resistors from All Electronics....

also do i want the T-1 3/4 LEDs or the T-1 LEDs? what is the difference?

please help!

 

contact Bill he knows a good site to order all that from

 

Ohm's law, voltage= current x resistance. You can use that to find out what size of resistor you need. It's been a while since i used that for any thing. I'll need to do a review and then i can tell you more.

 

that is the site he recommended in one of his how to's on getting rid of the door chime with the key on ACC.........they have awsomely cheap prices!

 

here is the link to all the resistors they have.....

Resistors

i am going to be running 1 LED for the blue wire on the e-fan controller, and 1 LED for my GALLS 60watt strobe box controller.......the strobe box has a 15 amp fuse in the box, and the e-fan i can't remember what ever Jusnes said to put in the add-a-circuit!

 

T1 3/4 = 5mm
T1 = 3mm

Here's John's LED tutorial. If you spend a few minutes with it, you should be able to compute the resistive value that you need.

 

Alright, as you know you need a resistor to keep the led from burning up. Calculating the resistor value is the question here. You could find it by using ohm's law but i found a calculator for this here You need to find out what the specifications for the leds are and put them in the calculator. I found an example of ohm's law that demonstrates what i think you are trying to do here I hope this makes some sense.

 

how big of a hole is 5mm and 3mm? i hate metric crap.....

 

3mm=.118" <- just under 1/8" (.125)
5mm = .196" <- just over 3/16" (.1875)

Pretty sure those are accurate, somebody can double check me if they like.

 

If you buy really bright leds you may consider using a resistor in the 500 - 600 ohm range so it doesnt blind you at night.

 

i am going to put it in the empty space infront of my guages.....behind the clear plastic piece.....i am sure i will call the place to verify that i have the correct ones for my application