LED Bulb Conversion

[Army_MP_From_MO]

I'm going for a full LED bulb conversion in my Cat. I put in some Jam Straight side marker lights and they look great. Today I received my 57 LED rear turn signal bulbs 7507. I put them in and nodda. Wouldn't light up. I found that I'm going to have to put in load resistors to get them to light up. Anyone got an idea of I need a 25 or 50 watt resistor?

[Cadi Cat]

just grab yourself a multifunction turn signal relay from autozone.

[cateraowner]

reverse the polarity of the bulb... incondensent lights it doesn't mater.. but led it does. you only need to use load resistors it it's flashing too fast

Let me know if it works

[Army_MP_From_MO]

So I just need to switch the wire going into the socket?

[cateraowner]

yep.. that's what I would assume. if it's something that requires a resistor it it'll just flash really fast

if you're skeptical you can use a 12v supply and test it out. it should show that the led is directional.

[Army_MP_From_MO]

I did what you suggested and they do light now, along with the brake lights, and the third brake light flashes opposite of those. It'd be great if it was an unmarked squad car.

[Cadi Cat]

I bought the 57 Red LED bulbs for my brakelights. They look great.

[cateraowner]

sorry I don't know if i'm following..

did you change the berak lights to led too?

is the brake light and the 3rd brake light lashing alternatly from the turn signal?

my only suggestion is a resistor. the only difference from the led and normal bulb is that the leds is the lad has a much lower load. so if you replaced both turn and break lights to led, the car might not know what to do with such a low load.

I'm getting my led in a week or so, if you figure something out before then let me know. if not I see if we can work through it together

[Army_MP_From_MO]

I just started out with the rear turn signals. I wanted to see if they were what I was looking for. They do look great! I just got to figure out how to get them to work right. I think I'm going to try a resistor and see if that will work.

Cadcat, did you have to do anything to get them to work?

[Cadi Cat]

Originally Posted by Army_MP_From_MO

I just started out with the rear turn signals. I wanted to see if they were what I was looking for. They do look great! I just got to figure out how to get them to work right. I think I'm going to try a resistor and see if that will work.

Cadcat, did you have to do anything to get them to work?

No, the brake lights were plug and play. You just have to make sure the polarity is right or the light pattern will be backwards. But I used to have another vehicle I used leds for the turn signal and I had to get a new turn signal relay because the load was higher with the added circuits of the extra leds (not to say its using more power because they don't). Instead of lighting two lights (which the factory relay is capable of handling) the relay is overloaded with the extra lights to illuminate that's why it won't flash. It just stays constant on. So I think if you just go to autozone and buy a new turnsignal relay for mutipule lights it will work. It's the same concept as towing a trailer or something adding extra turn signals