Anyone ever try one of these?

2X Car Auto Light Lamp Bulb 120 LED 3528 SMD H7 Xenon White Fog Driving Head 12V | eBay

Besides the 120 LED's, there are also 68 LED's H7 available. I would think 68 may not be enough. This is only going for less then $10 a pair, with free shipping.

My question is, this may throw an error on the dash, and I've read that it can be fixed by putting in the right resistor. How would I place the resistor in the circuit? Before the bulb, or After or across the leads?

 

I can't recall how much resistance you need, but it would be in series. I notice that link says the bulb is 500 LM. If that's Chinese for lumens, that is seriously low. A 55w Halogen produces around 1500 lumens... a 55w HID is around 3000 to 3500 lumens...so these bulbs would be okay for daytime running lights but will provide less light than cheap walmart foglights.

There are hi-power leds that provide 200 lumens each, but those are made by higher end companies such as luxeon.

 

Thanks for the info. I wasnt sure what would be considered low lumens for lowbeam application. I know ecs is selling LED reverse lights (way too expensive, ebay have others go for cheaper), so I started searching if I could do a full LED conversion for the rest.

 

i don't think LED's are there yet for headlights. i considered it but after a minimal amount of research, i went with an hid kit instead. its cheap and effective.

 

I'll probably buy a set for foglights. I'll see if I can get a set in yellow and I'll post up some pics if anyone else find interest in this.

 

In case somebody does try this, they'll want the resistor(s) in parallel to keep the car from thinking a bulb is burnt out. Putting in series wouldn't do the trick and would limit the voltage to the LED bulb. When you wire up a single LED then you want a resistor in series.

 

You're right. My bad.