Turn signal led resistor help

[rtvickers]

I have an 04 mustang. I put 68 led bulbs in the rear lights. I have the fast flash going on. I bought resistors and wired them like I was told. It didnt work. So I tried 2 resistors, it didnt work. So I tried 3 resistor, one per bulb and it didnt work. The first resistor I used was a 6ohm 50w. I went to radio shack and bought 6 100 ohm 10w resistors. The wires Im using are: Driver side grn/lt blue and black, passenger side or/grn stripe and black. If anyone knows anything about this your input will be greatly appreciated. Thanks

[bestracing]

Option #1

You need 4 resistors (if you only did the rear tail lights)

Resistor #1 - On the left, driver side, go across the Lt. Green/Org wire to the black wire on both sockets
Resistor #2 - On the right, go across the Orange/Lt. Blue wire to the black wire on both sockets

Do not hook them up in-line with just ONE wire. You have to add 1 resistor to each LED bulb including blinking side marker lights.

The problem is that the LED's don't draw enough current so putting a small ohm resistor across the leads will draw more current and make the original flasher work.

Option #2

Go to super bright leds and get an electronic flasher. http://www.superbrightleds.com/cat/c...tall-supplies/ It's a $13 dollar fix and you can have a mix of LED and filament bulbs and it will still work. This is what I did for my T/A since I didn't want to buy 8 resistors and cut my wire harness to make it work.

[bigwoofersnet]

Ricer.

[Dunc]

http://led.linear1.org/led.wiz

But if you're just trying to fix the fast flash, then get the flasher module as said above. Need any custom colored blood red LEDs?

[/thread]

[rtvickers]

Originally Posted by bestracing

Option #1

You need 4 resistors (if you only did the rear tail lights)

Resistor #1 - On the left, driver side, go across the Lt. Green/Org wire to the black wire on both sockets
Resistor #2 - On the right, go across the Orange/Lt. Blue wire to the black wire on both sockets

Do not hook them up in-line with just ONE wire. You have to add 1 resistor to each LED bulb including blinking side marker lights.

The problem is that the LED's don't draw enough current so putting a small ohm resistor across the leads will draw more current and make the original flasher work.

Option #2

Go to super bright leds and get an electronic flasher. http://www.superbrightleds.com/cat/c...tall-supplies/ It's a $13 dollar fix and you can have a mix of LED and filament bulbs and it will still work. This is what I did for my T/A since I didn't want to buy 8 resistors and cut my wire harness to make it work.

I did option 1. I had one resistor per led bulb. I didnt put them in line. I put them in parrell. 2 wires per resistor. I used 100 ohm 10watt resistors from radioshack. But I think the socket takes a 25w stock bulb 3157. I have one 6 ohm 50w resistor. Should I use more of them? Or use 3 of the 10w resistors per led bulb?

[rtvickers]

Originally Posted by Dunc

http://led.linear1.org/led.wiz

But if you're just trying to fix the fast flash, then get the flasher module as said above. Need any custom colored blood red LEDs?

[/thread]

I dont know the values to put into the calculator. As of right now Im good on the leds.

[87poopra]

Originally Posted by rtvickers

I did option 1. I had one resistor per led bulb. I didnt put them in line. I put them in parrell. 2 wires per resistor. I used 100 ohm 10watt resistors from radioshack. But I think the socket takes a 25w stock bulb 3157. I have one 6 ohm 50w resistor. Should I use more of them? Or use 3 of the 10w resistors per led bulb?

Putting the resistors in parallel actually cuts the value of the resistance in half. You need to put the resistors in series in order to get the full value.

[rtvickers]

Originally Posted by 87poopra

Putting the resistors in parallel actually cuts the value of the resistance in half. You need to put the resistors in series in order to get the full value.

How do you put them in series.

[ForceFed]

End to end then across the two wires in simple terms.
Wire here•---•wire here the dashes being resistors.

[rtvickers]

I forgot to mention. I have a sequential system that I wired in. So I have 3 lights on both sides. So I should wire the resistor inline with the hot wire on each bulb. That would be in a series right? Parallel would be to use hot and ground in all three bulb sockets right? Should I use the 6 ohm 50w or the 100 ohm 10w resistors?

[ForceFed]

Smfh.

Just go to someone who knows what they are doing. The
Resistor needs to be across the hot and ground of whatever circuit you're trying to add load to. If a single wire and ground powers your three light sequence(?) then the load would be across that entire circuit. I guess it all
Depends in how you wired...what.

[rtvickers]

Originally Posted by ForceFed

Smfh.

Just go to someone who knows what they are doing. The
Resistor needs to be across the hot and ground of whatever circuit you're trying to add load to. If a single wire and ground powers your three light sequence(?) then the load would be across that entire circuit. I guess it all
Depends in how you wired...what.

Lol what does Smfh mean? Its not that big of a deal. Im sure I will figure it out. I think I may be using too small of a resistor. If its a 25w per socket system and I have 10w resistors I think I need more 50w resistors.

[ForceFed]

I've always used one resistor on Any LED circuit where incandescent used to be. I assume your using a large ceramic resistor?

[rtvickers]

Originally Posted by ForceFed

I've always used one resistor on Any LED circuit where incandescent used to be. I assume your using a large ceramic resistor?

I bought these and tried them first. Which was only one per side.
http://www.ebay.com/itm/2X-6ohm-50W-...d14999&vxp=mtr

And I bought 6 of these at radioshack yesterday.
http://speakerbug.com.au/shop/index....dex&cPath=16_5

[Kisor]

You should be using the 6 Ohm 50 Watt resistors on each bulb you have replaced.

Each 3157 conventional bulb when lit draws about 2 Amps of current.

I=V/R, I=(12 volts)/(6 Ohms), 12/6 = 2

2 amps is what your 6 Ohm resistors should pull and make the Flasher function correctly.

You have three bulbs per side and 2 of the 3 are dual filament brake/turn 3157's correct?

The running lights do not need to have resistors, just the brake/turn portion, I don't know what color the wires are for just that portion of your system but you will need 2 resistors per side one for each bulb with a turn/brake filament.

This sequential setup may be messing with the whole thing. Where does it splice in? you could possibly run the resistors before the sequential using two 6 Ohm or one 3 Ohm 100 Watt depending on how its wired with the sequential.







Hope that confuses the situation more......

[Dunc]

Originally Posted by rtvickers

How do you put them in series.

You obviously didn't click the link I provided. It gives you a wiring diagram with pictures and tells you exactly which resistor you'll need. It literally couldn't make it any easier to follow to wire up and type or amount of LEDs.

[Kisor]

But you don't wire them in series. That will decrease load on the circuit. They should be paralleled with the lamp.

[rtvickers]

Originally Posted by Kisor

You should be using the 6 Ohm 50 Watt resistors on each bulb you have replaced.

Each 3157 conventional bulb when lit draws about 2 Amps of current.

I=V/R, I=(12 volts)/(6 Ohms), 12/6 = 2

2 amps is what your 6 Ohm resistors should pull and make the Flasher function correctly.

You have three bulbs per side and 2 of the 3 are dual filament brake/turn 3157's correct?

The running lights do not need to have resistors, just the brake/turn portion, I don't know what color the wires are for just that portion of your system but you will need 2 resistors per side one for each bulb with a turn/brake filament.

This sequential setup may be messing with the whole thing. Where does it splice in? you could possibly run the resistors before the sequential using two 6 Ohm or one 3 Ohm 100 Watt depending on how its wired with the sequential.







Hope that confuses the situation more......

Your close. With my sequential setup it uses the third light. I had to splice in a wire to power it. So its a 3 bulb setup. The setup for the sequentials splices in after the wiring harness connector. I had to cut the power wires to the two flashing bulbs and run them to the sequential and then it has three wires that that come out and go to each socket. So all I need to is get 4 more resistors and put them in series with at each bulb?

[rtvickers]

Originally Posted by Kisor

But you don't wire them in series. That will decrease load on the circuit. They should be paralleled with the lamp.

Paralell, got it. Thank you.

[rtvickers]

Originally Posted by Dunc

You obviously didn't click the link I provided. It gives you a wiring diagram with pictures and tells you exactly which resistor you'll need. It literally couldn't make it any easier to follow to wire up and type or amount of LEDs.

Obviously you didnt see my reply to your link.