Quote:
Originally Posted by Meir
very nice tony.
i'm thinking about doing something similar, but using mini relays.
using the relays will not require any resistor if using LED bulbs.
on top of that, if the running lights are on, the "blinker command" will basically turn them off and on in the blinker pattern.
if the running lights are off, the "blinker command" will turn the lights on and off according to blinker pattern.
this setup is more complicated and will require running a line to the blinker fuse inside the car.
|
Meir:
The circuit provided below will not require relays.
You can simply change the car's stock flasher relay with the model EFL-3 Flasher relay for LED's.
It plug's right in in place of the stock flasher relay. (It will handle hazards & Blinkers) (3 Pin flasher relay)
3 PIN ELECTRONIC LED FLASHER BLINKER FIX 1157 3157 7443
Circuit explanation:
The diodes act as one way switches of the voltage (out), they block the return of the voltage into the other input lead. (PIV) Peak Inverse Voltage
With a rating of 50 volts PIV, they will not allow the voltage less than 50 volts from returning. Of course the higher the PIV rating, the higher the voltage it will block. 50 volts PIV is more than enough to block 14.5 volts from the car power even at full alternator charging.
To give you an example:
The parking light is on, passing voltage out the resistor & diode to the LED or bulb, the other diode connected to the turn signal lead will NOT allow that parking light voltage to return to the turn signal input.
When the turn signal is engaged, along with the the parking light being on, it will pass the blinker voltage to the LED or bulb.
The diode on the parking light will prevent or block the blinker voltage from returning into the parking light input.
To summarize, they both will pass voltage to the LED or bulb, but block the return of voltage to either of the inputs.
The resistor's role in the parking light is to dim the parking light output, thus when the blinker is engaged, it will illuminate brighter than the parking light.
hope that explains it a little better..
T
