michaellaf
New Member
Glad you got it working.
I'm surprised a 10 ohm resistor is enough to make a visual difference between parking and indicator. What are the specs of your LED?
Assuming 13.2V while running. The LEDs I used were rated at 1W, I found something on Amazon that looks like what's in your picture that says 2W.
The following is calculated using basic electrical equations V = i R & P = i V
V=voltage (in volts), i = current (in amps), R = resistance (in ohms), and P = power (in Watts)
View attachment 532146
It seems like a 10% change would be difficult to perceive. I grabbed this from google to help demonstrate what I mean. But heck, if yours is working, excellent.
View attachment 532147
Yeah, im surprised 10ohm works. Even 25ohm wouldn’t work. At 10ohm, I get about 40%-50% of a drop in brightness, matching the front blinkers perfectly.
My calculations to find the appropriate ohm, with a 50% drop, and 2watts LED (you are correct that they are two watts) off of my 12volts car battery, told me I should use a ~25ohm resistor, but even that was dropping it too much. At 25ohm, normal 5w halogen bulbs would drop about 50%, but not the LED’s. I also used 3w resistors in case I want to change my LED’s some day. Anyway, my LED’s were cheap amazon ones so I’ll assume the power rating isn’t accurate.
In any case, it works perfectly and looks awesome! I’m glad I was able to learn through this process! Thanks again