I'm wiring up some HID headlights and I need some 3-4 ohm 100watt resistors. Does anyone know where I can find these? Or what I can use as a substitute? Car speakers worked for testing purposes, but they heat up and blow.
Thanks,
Darrell

 

radio shack?

 

Do you need them as a voltage reducer? if so you can get some voltage regulator chips that will regulate the voltage down to the desired level and stabilize it there without burning off the energy like a resistor does. They do a duty cycle to charge a small capacitor to achieve the desired voltage.

HTH

AlpineRAM

 

You should be able to source the parts from any one of these suppliers:

www.digikey.com
www.mouser.com
www.newark.com
www.alliedelec.com

Try to stay with aluminum heastink type & mout them to the chassis for better heat dissipation.

HTH

Tony

 

Tony B-Thanks.All of those suppliers have them. Please forgive my inexperience, but do I wire the resistors in line on the positive side. Or do they need to go from pos to neg to show resistance on the circuit?

Alpine ram- I need these to show resistance to fool the computer into thinking the lightbulb is still there. If you don't show enough resistence or load the computer drops the voltage to the headlight circuit to like 3.2vdc which isn't enough to fire the HID's.
Thanks to all
Darrell

 

That's how I'd do it.