Continue to Site

Welcome to our site!

Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

LED marker/turn lights conversion: Need a new circuit. Need help.

Status
Not open for further replies.

jomeza001

New Member
Hi there guys. Here my project:

From factory my 2004 Jeep Wrangler comes with ordinary, 2 filament bulb marker lights up front. I have converted to LED lights with only two wires (Neg, and Pos).

So the goal is to get the new marker LED Lights to:
1.-LED's to Blink when the turn signal lever from the steering wheel is activated
2.-LED's to run at full power while the marker lights are on
3.-LED's to blink on turn signal even when the marker lights are on.

The image below shows a relay configuration someone posted in a Jeep forum. It works great *ONLY* when the marker lights are ON. This means during the day, this circuit leaves me with no turn signal lights.
Here the details:

Relay wiring will tap into the stock circuit in the following way;
Pin 30 is the positive wire from the Jeep marker light circuit
Pin 85 is the floating ground wire from the Jeep turn signal circuit
Pin 86 is the relay ground to the body
Pin 87a is a positive wire to the side marker LED positive input
Pin 87 is unused

The relay works by allowing the side LED's to run at full power while your marker lights are on due to the 87a side of the relay being energized. Once the turn signal wire energizes it flips the relay over to the 87 pin causing the side LED's to lose (+) power and the LED to go out. Once the turn signal cycles to off, the relay clicks back over to the 87a pin causing the LED to light back up. Doing this allows them to flash between full power and completely off.
41663594.png

So my quesiton is... how can i do to achieve my new LED turn signal lights to work during the day (when the marker lights are off)???

Any question will be appreciated!
 
Last edited:
Ummm Dude; I think the turn signal lights need to be brighter than the running lights. Why would you put in the wrong type LED lights?
 
What is that funny white stuff all over everthing?
 
If 85/86 are the coil, 30 is the common, 87 is N/O and 87a is N/C, the following should work.

The steady +ve marker circuit connects to 87a.
The marker lights connect to 30.
The switched +ve blinker wire connects to 87.
The switched +ve blinker wire connects to a circuit that turns on the relay for a time longer than the off-time of the blinker.

This configuration directs the blinker signal to the marker lamps while the blinker is flashing, and otherwise directs the marker signal to the marker lamps if the blinker is not on.

The time delay circuit can use a 555 timer, or simply a diode + capacitor + resistors + transistor, or just a diode and very large capacitor. Sorry, I'd draw a circuit, but don't have a means to get it on the computer at the moment.
 
Don't forget the 4-way flashers.

Your saying that flash overides markers. Do you have a steady state signal available that says your in turn signal mode?

Does the current turn signal flash at the right rate? i.e. Does load determine flash rate?

Right now I'm asking questions.
 
Status
Not open for further replies.

Latest threads

New Articles From Microcontroller Tips

Back
Top